Updated on 2022/03/30

写真a

 
NAGAO, Masahiro
 
Organization
Graduate School of Environmental Studies Department of Environmental Engineering and Architecture Functional Materials and Environment Associate professor
Graduate School
Graduate School of Environmental Studies
Undergraduate School
School of Informatics Department of Natural Science Informatics
School of Informatics and Sciences -
Title
Associate professor
Contact information
メールアドレス

Degree 2

  1. Doctor (Engineering) ( 2011.9   Nagoya University ) 

  2. 修士(環境学) ( 2005.3   名古屋大学 ) 

Research Interests 4

  1. 燃料電池

  2. センサ

  3. 機械学習

  4. 最適化計算

Research Areas 3

  1. Energy Engineering / Earth resource engineering, Energy sciences  / Fuel cell/ Battery

  2. Informatics / Soft computing  / Optimization

  3. Environmental Science/Agriculture Science / Environmental load reduction and remediation  / Environmental Technology/Environmental Material

Current Research Project and SDGs 6

  1. バイオマスを燃料に用いた燃料電池の開発

  2. 活性酸素を用いた自己再生型PMセンサーの開発

  3. 高温作動キャパシタの開発

  4. マテリアルフローコスト会計手法を用いた環境会計情報の可視化と低環境負荷型経営の実現

  5. 遺伝的アルゴリズムを用いた低環境負荷型社会システムおよびエネルギーシステムの最適化に関する研究

  6. A solution of environmental dilemma by the evolution of cooperation

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Research History 6

  1. Nagoya University   Graduate School of Environmental Studies Department of Environmental Engineering and Architecture Functional Materials and Environment   Associate professor

    2020.4

  2. Nagoya University   Graduate School of Environmental Studies Department of Environmental Engineering and Architecture Functional Materials and Environment   Lecturer

    2015.10 - 2020.3

  3. Nagoya University   Graduate School of Environmental Studies Department of Environmental Engineering and Architecture   Assistant Professor

    2007.4 - 2015.9

  4. Assistant Proffesor

    2007.4

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    Country:Japan

  5. Research assistant

    2006.2 - 2007.3

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    Country:Japan

  6. Nagoya University   Graduate School of Environmental Studies Department of Environmental Engineering and Architecture   Assistant

    2006.2 - 2007.3

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Education 3

  1. Nagoya University   Graduate School of Environmental Studies   Department of Environmental Engineering and Architecture

    2005.4 - 2006.1

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    Country: Japan

  2. Nagoya University   Graduate School of Environmental Studies   Department of Environmental Engineering and Architecture

    2003.4 - 2005.3

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    Country: Japan

  3. Nagoya University   Faculty of Information and Culture   Natural Science Informatics

    1999.4 - 2003.3

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    Country: Japan

Professional Memberships 4

  1. The Electrochemical Society of Japan

  2. 日本化学会

  3. The Electrochemical Society

  4. The Japanese Chapter of the System Dynamics Society

Committee Memberships 2

  1. 日本化学会東海支部   常任幹事  

    2018.3 - 2019.2   

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    Committee type:Academic society

  2. 日本化学会東海支部   幹事  

    2017.3 - 2019.2   

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    Committee type:Academic society

Awards 2

  1. 電気化学会第75回大会 ポスター賞

    2008.3   社団法人 電気化学会  

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    Country:Japan

    これまで報告例が極めて少なかった,中温で作動する燃料電池における使用燃料の多様性を評価した結果を報告.

  2. 電気化学会東海支部若手研究者特別賞

    2007.1   電気化学会東海支部  

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    Country:Japan

 

Papers 76

  1. Ionic conductive and photocatalytic properties of cementitious materials: calcium silicate hydrate and calcium aluminoferrite International coauthorship

    Nagao Masahiro, Kobayashi Kazuyo, Jin Yongcheng, Maruyama Ippei, Hibino Takashi

    JOURNAL OF MATERIALS CHEMISTRY A   Vol. 8 ( 30 ) page: 15157 - 15166   2020.8

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/d0ta04866f

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  2. Fuel cell and electrolyzer using plastic waste directly as fuel

    Hori Tetsuya, Kobayashi Kazuyo, Teranishi Shinya, Nagao Masahiro, Hibino Takashi

    WASTE MANAGEMENT   Vol. 102   page: 30 - 39   2020.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.wasman.2019.10.019

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  3. A Cellulose Electrolysis Cell with Metal-Free Carbon Electrodes International coauthorship

    Li Yaorong, Nagao Masahiro, Kobayashi Kazuyo, Jin Yongcheng, Hibino Takashi

    CATALYSTS   Vol. 10 ( 1 )   2020.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.3390/catal10010106

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  4. Humidity Driven Transition from Insulator to Ionic Conductor in Portland Cement

    Nagao Masahiro, Kobayashi Kazuyo, Hori Tetsuya, Li Yaorong, Hibino Takashi

    MATERIALS   Vol. 12 ( 22 )   2019.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.3390/ma12223701

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  5. Addition of Docetaxel to Oral Fluoropyrimidine Improves Efficacy in Patients With Stage III Gastric Cancer: Interim Analysis of JACCRO GC-07, a Randomized Controlled Trial

    Kazuhiro Yoshida, Yasuhiro Kodera, Mitsugu Kochi, Wataru Ichikawa, Yoshihiro Kakeji, Takeshi Sano, Narutoshi Nagao, Masazumi Takahashi, Akinori Takagane, Takuya Watanabe, Masahide Kaji, Hiroshi Okitsu, Takashi Nomura, Takanori Matsui, Takaki Yoshikawa, Jin Matsuyama, Makoto Yamada, Seiji Ito, Masahiro Takeuchi, Masashi Fujii

    Journal of Clinical Oncology   Vol. 37 ( 15 ) page: 1296 - 1304   2019.5

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Society of Clinical Oncology (ASCO)  

    <jats:sec><jats:title>PURPOSE</jats:title><jats:p> S-1 is a standard postoperative adjuvant chemotherapy for patients with stage II or III gastric cancer in Asia. Neoadjuvant or perioperative strategies dominate in Western countries, and docetaxel has recently shown significant survival benefits when combined with other standard regimens in advanced cancer and perioperative settings. </jats:p></jats:sec><jats:sec><jats:title>PATIENTS AND METHODS</jats:title><jats:p> This randomized phase III study was designed to prove the superiority of postoperative S-1 plus docetaxel over S-1 alone for R0 resection of pathologic stage III gastric cancer. The sample size of 1,100 patients was necessary to detect a 7% increase in 3-year relapse-free survival as the primary end point (hazard ratio, 0.78; 2-sided α = .05; β = .2). </jats:p></jats:sec><jats:sec><jats:title>RESULTS</jats:title><jats:p> The second interim analysis was conducted when the number of events reached 216 among 915 enrolled patients (median follow-up, 12.5 months). Analysis demonstrated the superiority of S-1 plus docetaxel (66%) to S-1 (50%) for 3-year relapse-free survival (hazard ratio, 0.632; 99.99% CI, 0.400 to 0.998; stratified log-rank test, P < .001), and enrollment was terminated as recommended by the independent data and safety monitoring committee. Incidences of grade 3 or greater adverse events, particularly neutropenia and leukopenia, were higher in the S-1 plus docetaxel group, but all events were manageable. </jats:p></jats:sec><jats:sec><jats:title>CONCLUSION</jats:title><jats:p> Addition of docetaxel to S-1 is effective with few safety concerns in patients with stage III gastric cancer. The present findings may also be applicable in countries in which perioperative adjuvant chemotherapy or chemoradiation is not standard. </jats:p></jats:sec>

    DOI: 10.1200/jco.18.01138

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  6. Electrolysis of humidified methane to hydrogen and carbon dioxide at low temperatures and voltages

    Hori Tetsuya, Ma Qiang, Kobayashi Kazuyo, Nagao Masahiro, Teranishi Shinya, Hibino Takashi

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   Vol. 44 ( 5 ) page: 2454 - 2460   2019.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ijhydene.2018.12.044

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  7. Intermediate-temperature electrolysis of energy grass Miscanthus sinensis for sustainable hydrogen production

    Ito Masaya, Hori Tetsuya, Teranishi Shinya, Nagao Masahiro, Hibino Takashi

    SCIENTIFIC REPORTS   Vol. 8 ( 1 ) page: 16186   2018.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41598-018-34544-y

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  8. Direct electrolysis of waste newspaper for sustainable hydrogen production: an oxygen-functionalized porous carbon anode

    Hibino Takashi, Kobayashi Kazuyo, Ito Masaya, Nagao Masahiro, Fukui Mai, Teranishi Shinya

    APPLIED CATALYSIS B-ENVIRONMENTAL   Vol. 231   page: 191 - 199   2018.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.apcatb.2018.03.021

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  9. Efficient Hydrogen Production by Direct Electrolysis of Waste Biomass at Intermediate Temperatures

    Takashi Hibino, Kazuyo Kobayashi, Masaya Ito, Qiang Ma, Masahiro Nagao, Mai Fukui, Shinya Teranishi

    ACS Sustainable Chemistry & Engineering   Vol. 6 ( 7 ) page: 9360 - 9368   2018.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acssuschemeng.8b01701

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  10. Hydrogen Production by Direct Lignin Electrolysis at Intermediate Temperatures

    Hibino Takashi, Kobayashi Kazuyo, Nagao Masahiro, Teranishi Shinya

    CHEMELECTROCHEM   Vol. 4 ( 12 ) page: 3032 - 3036   2017.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/celc.201700917

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  11. High Performance Anode for Direct Cellulosic Biomass Fuel Cells Operating at Intermediate Temperatures

    Hibino Takashi, Kobayashi Kazuyo, Lv Peiling, Nagao Masahiro, Teranishi Shinya

    Bulletin of the Chemical Society of Japan   Vol. 90 ( 9 ) page: 1017 - 1026   2017.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Chemical Society of Japan  

    <p>Cellulosic biomass resources have considerable potential as a renewable energy source that can be used for the cogeneration of electricity and heat. The utilization of these resources generally requires three major systematic processes: gasification, gas processing, and gas utilization. If a power generator could operate using wood resources directly as fuels, then this system could be significantly simplified, thereby reducing initial equipment cost and enhancing application flexibility. An intermediate-temperature fuel cell could possibly realize such an operation; however, the fuel-cell characteristics, especially the catalytic activity of the Pt/C anode, are not sufficient at present. In this study, we attempted to improve the anode activity by alloying Pt with other metals, followed by optimization of the alloy in terms of its atomic ratio and content. The resulting PtFe/C anode yielded higher power densities (37–42 mW cm<sup>−2</sup>) and energy densities (125–169 Wh kg<sup>−1</sup>) at 250 °C for fuels composed of cypress, tissue paper, and cotton, compared to those obtained using the Pt/C anode, despite its smaller Pt loading.</p>

    DOI: 10.1246/bcsj.20170163

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  12. Grammatical evolution using two-dimensional gene for symbolic regression: an advanced improvement with conditional statement grammar Reviewed

    Hideyuki Sugiura, Masahiro Nagao, Yi Zuo, Eisuke Kita

    International Journal of Computational Intelligence Studies   Vol. 5 ( 3-4 ) page: 237-251   2017.4

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    DOI: 10.1504/IJCISTUDIES.2016.10004364

  13. Balancing setup workers' load of flexible job shop scheduling using hybrid genetic algorithm with tabu search strategy Reviewed

    Yasuhiko Morinaga, Masahiro Nagao, Mitsuru Sano

    International Journal of Decision Support Systems   Vol. 2 ( 1-3 ) page: 71-90   2017.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1504/IJDSS.2016.10000521

  14. An Intermediate-Temperature Biomass Fuel Cell UsingWood Sawdust and Pulp Directly as Fuel

    Hibino Takashi, Kobayashi Kazuyo, Lv Peiling, Nagao Masahiro, Teranishi Shinya, Mori Toshiyuki

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 164 ( 6 ) page: F557 - F563   2017

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1149/2.0511706jes

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  15. NOx Sensing Characteristics of Semiconductor Gas Sensors under Controlled Oxygen Activity Conditions Using a Proton-Conducting Electrolyte

    Nagao Masahiro, Kobayashi Kazuyo, Lv Peiling, Teranishi Shinya, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 164 ( 9 ) page: B397 - B402   2017

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1149/2.0361709jes

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  16. Grammatical Evolution using Tree Representation Learning

    Shunya Maruta, Yi Zuo, Masahiro Nagao, Hideyuki Sugiura, Eisuke Kita

    The 24th International Conference On Neural Information Processing   Vol. 10637   page: 346 - 355   2017

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/978-3-319-70093-9_36

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  17. Grammatical evolution using two-dimensional gene for symbolic regression: An advanced improvement with conditional statement grammar

    Sugiura H., Nagao M., Zuo Y., Kita E.

    International Journal of Critical Infrastructures   Vol. 13 ( 1 ) page: 237 - 251   2017

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:International Journal of Critical Infrastructures  

    Symbolic regression problems can be solved using grammatical evolution (GE), an evolutionary computation (EC) method, to find a function that coincides satisfactorily with the given datasets. The evolutional approach of GE is based on the grammar learning paradigm, which can translate the genotype (binary digit) into the phenotype (terminals and non-terminals). Unlike traditional codons in a genotype, the fittest codons in phenotype represented by the Backus-Naur form (BNF) are difficult for next generation genes to inherit the traits of parents, accounting for crossover and mutation. For this issue, this article presents a proposal of an advanced improvement to GE using a two-dimensional gene (GE2DG). In contrast to multi-chromosomal GE (GEMC), our proposal not only encloses the two-dimensional gene-expression for symbolic regression, but also introduces one independent gene defined as a conditional statement to express a new BNF grammar of an if-then (-else) branch. In the experiments described herein, continuous/discontinuous non-branch functions and continuous/discontinuous branch functions, four testing patterns, are considered as numerical examples. Results show that GE2DG has better performance than the original GE or GEMC. Especially for the case of branch functions, GE with hybrid chromosome (GEHC), where GE2DG is incorporated with GEMC, has faster convergence in symbolic regression than other methods.

    DOI: 10.1504/IJCIS.2017.083634

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  18. A self-regenerable soot sensor with a proton-conductive thin electrolyte and a nanostructured platinum sensing electrode

    Lv Peiling, Ito Takenori, Oogushi Akihide, Nakashima Kensaku, Nagao Masahiro, Hibino Takashi

    SCIENTIFIC REPORTS   Vol. 6   page: 37463   2016.11

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    DOI: 10.1038/srep37463

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  19. Kinetically driven switching and memory phenomena at the interface between a proton-conductive electrolyte and a titanium electrode

    Hibino Takashi, Kobayashi Kazuyo, Nagao Masahiro

    SCIENTIFIC REPORTS   Vol. 6   page: 31691   2016.8

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    DOI: 10.1038/srep31691

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  20. A Rechargeable Tin–Air PEM Battery Using SnSO<sub>4</sub> as an Anode-active Material

    Kobayashi Kazuyo, Nagao Masahiro, Hibino Takashi

    Chemistry Letters   Vol. 45 ( 2 ) page: 161 - 163   2016.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Chemical Society of Japan  

    SnSO<sub>4</sub> was employed as an anode-active material for rechargeable batteries, where Sn<sup>4+</sup> and Sn<sup>2+</sup> ions are reduced to Sn<sup>2+</sup> and Sn, respectively during charge while the inverse reactions occur during discharge. Undesired hydrogen production was substantially avoided by adjusting the charge voltage to 1.5 V. The resulting cell functioned as a battery with an electrical capacity of 258 mA h g<sup>−1</sup> at 10 mA cm<sup>−2</sup> and as a fuel cell with power densities of 55–125 mW cm<sup>−2</sup> at 0.8 V.

    DOI: 10.1246/cl.151015

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  21. Rechargeable Metal-Air Proton-Exchange Membrane Batteries for Renewable Energy Storage

    Nagao Masahiro, Kobayashi Kazuyo, Yamamoto Yuta, Yamaguchi Togo, Oogushi Akihide, Hibino Takashi

    CHEMELECTROCHEM   Vol. 3 ( 2 ) page: 247 - 255   2016.2

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    DOI: 10.1002/celc.201500473

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  22. A self-regenerable soot sensor with a proton-conductive thin electrolyte and a nanostructured platinum sensing electrode Reviewed

    Peiling Lv, Takenori Ito, Akihide Oogushi, Kensaku Nakashima, Masahiro Nagao, Takashi Hibino

    Scientific Reports   Vol. 6   page: 37463   2016

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  23. Rechargeable metal-air proton -exchange membrane batteries for renewable energy storage Reviewed

    Masahiro Nagao, Kazuyo Kobayashi, Yuta Yamamoto, Togo Yamaguchi, Akihide Oogushi, Takashi Hibino

    ChemElectroChem   Vol. 3   page: 247-255   2016

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  24. Kinetically driven switching and memory phenomena at the interface between a proton-conductive electrolyte and a titanium electrode Reviewed

    Takashi Hibino, Kazuyo Kobayashi, Masahiro Nagao

    Scientific Reports   Vol. 6   page: 31691   2016

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  25. A Sensitive and Self-Regenerable Particulate Matter Sensor with a H3PO4-Modified BaZr0.8Y0.2O3-delta Electrolyte and an IrO2-Catalyzed Sensing Electrode

    Lv Peiling, Oogushi Akihide, Nakashima Kensaku, Kobayashi Kazuyo, Nagao Masahiro, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 163 ( 14 ) page: B761 - B767   2016

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    DOI: 10.1149/2.1281614jes

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  26. Design of a Rechargeable Fuel-Cell Battery with Enhanced Performance and Cyclability

    Hibino Takashi, Kobayashi Kazuyo, Nagao Masahiro, Yamamoto Yuta

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 163 ( 7 ) page: A1420 - A1428   2016

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    DOI: 10.1149/2.1341607jes

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  27. Diversity oriented multi-objective island based genetic algorithm for flexible job shop scheduling considering setup operator regulation Reviewed

    Masahiro Nagao, Takuya Sugimoto, Yasuhiko Morinaga, and Mitsuru Sano

    Journal of Human Environmental Studies   Vol. 12 ( 1 ) page: 1-12   2015.6

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  28. A Direct Urine Fuel Cell Operated at Intermediate Temperatures

    Nagao Masahiro, Kobayashi Kazuyo, Hibino Takashi

    Chemistry Letters   Vol. 44 ( 3 ) page: 363 - 365   2015.3

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Chemical Society of Japan  

    Direct utilization of urine in fuel cells is a promising technology for conversion into electricity. Here, we report the design of anode materials for high-temperature direct urine fuel cells and the performance of a fuel cell with an optimized anode at 300 °C. The resultant peak power densities reached 16.7 mW cm<sup>−2</sup> for urine and 26.5 mW cm<sup>−2</sup> for urea.

    DOI: 10.1246/cl.141067

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  29. High-temperature supercapacitor with a proton-conducting metal pyrophosphate electrolyte

    Hibino Takashi, Kobayashi Kazuyo, Nagao Masahiro, Kawasaki Shinji

    SCIENTIFIC REPORTS   Vol. 5   page: 7903   2015.1

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    DOI: 10.1038/srep07903

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  30. Diversity oriented multi-objective island based genetic algorithm for flexible job shop scheduling considering setup operator regulation

    Nagao Masahiro, Sugimoto Takuya, Morinaga Yasuhiko, Sano Mitsuru

    Journal of Human Environmental Studies   Vol. 13 ( 1 ) page: 1 - 12   2015

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Society for Human Environmental Studies  

    The flexible job-shop scheduling problem has received considerable attention in the production scheduling field. Setup operators are inseparable from the system of a small-volume and widely diverse producing. The work load balance among setup operators is important to increase the satisfaction at work. In this paper, a diversity-oriented multi-objective island based genetic algorithm is proposed to solve the FJSP considering the setup operators as a constraint. The total tardiness of each product and the difference of the setup number between setup operators are regarded as objectives and optimized using the Pareto-based method. When the proposed GA is applied to a test instance with moderate size of the problem complexity, it obtained the two exact solutions within a few seconds. Results show that the proposed algorithm, which was applied to the realistic production planning of the model enterprise, improves diversity of sub-solutions and the local search performance by the introduction of the diversity-oriented evaluation of each island, and emigration strategy among islands.

    DOI: 10.4189/shes.13.1

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  31. Rechargeable PEM Fuel-Cell Batteries Using Porous Carbon Modified with Carbonyl Groups as Anode Materials International coauthorship

    Kobayashi Kazuyo, Nagao Masahiro, Yamamoto Yuta, Heo Pilwon, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 162 ( 8 ) page: F868 - F877   2015

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    DOI: 10.1149/2.0581508jes

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  32. Rechargeable PEM Fuel-Cell Batteries Using Quinones as Hydrogen Carriers

    Nagao Masahiro, Kobayashi Kazuyo, Yamamoto Yuta, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 162 ( 4 ) page: F410 - F418   2015

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1149/2.0611504jes

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  33. Low-temperature Sintering of Yttria-stabilized Zirconia Using Bismuth–Vanadium Oxide as a Sintering Aid at 800 °C

    Nagao Masahiro, Kobayashi Kazuyo, Hibino Takashi

    Chemistry Letters   Vol. 43 ( 12 ) page: 1887 - 1889   2014.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Chemical Society of Japan  

    The effect of the addition of copper-doped bismuth–vanadium oxide to yttria-stabilized zirconia (YSZ) on the sinterability and electrical conductivity, especially in reducing atmospheres, has been investigated. When Bi<sub>2</sub>Cu<sub>0.1</sub>V<sub>0.9</sub>O<sub>5.35</sub> was used as a sintering aid, the sintering temperature could be reduced to 800 °C, whereas the conventional sintering process requires temperatures above 1300 °C. Although the conductivity of YSZ with 1.5 mol % Bi<sub>2</sub>Cu<sub>0.1</sub>V<sub>0.9</sub>O<sub>5.35</sub> was slightly lower than that of pure YSZ sintered at 1300 °C, no <I>P</I><sub>O<sub>2</sub></sub> dependence was observed under reducing conditions (e.g., <I>P</I><sub>O<sub>2</sub></sub> = 10<sup>−5</sup>–10<sup>−24</sup> atm), which indicates that the electrolyte is applicable to solid-oxide fuel cells.

    DOI: 10.1246/cl.140712

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  34. Solo pool-punishers defeat free-riders through individual learning in compulsory public goods games

    Mitsuru Sano, Kenta Nagasawa, and Masahiro Nagao

    Social for Human Environmental Studies   Vol. 12 ( 2 ) page: 181-189   2014.12

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  35. Proton-conducting tin phosphates for electrochemical applications operating at intermediate temperatures Invited

    Masahiro Nagao

    Journal of Material Sciences & Engineering   Vol. 3 ( 3 ) page: 64   2014.10

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    Authorship:Lead author   Language:English   Publishing type:Research paper (other academic)  

    DOI: 10.4172/2169-0022.s1.013

  36. Flexible job shop scheduling with weighted tardiness and setup worker load balance in make-to-order manufacturing

    Yasuhiko Morinaga, Masahiro Nagao, Mitsuru Sano

    IPSJ SIG technical reports   Vol. 2014 ( 24 ) page: 1-7   2014.6

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    This paper describes the optimization of flexible job-shop scheduling problem (FJSP) in small and medium-sized companies with make-to-order (MTO) manufacturing many kinds of products. Incorporating weighted tardiness and set-up worker load balance to the objective function of the problem, we develop Genetic Algorithm (GA) using island model and a study of production data in real world make-to-order manufacturing type small business. Comparing the solutions by developed GA with the values obtained by prioritizing due date alone schedule such as EDD (Earliest due date), we confirm the effectiveness of the proposed method. In addition, we conduct numerical experiments on risk, which is general in the enterprise, and countermeasures by using this technique, and confirm that it is possible to quantitatively evaluate the effects. We suggest that the proposed method has potential to contribute to the business judgment in the make-to-order type small business with products and services by incorporating other objective functions

  37. Optimization of flexible job-shop scheduling with weighted tardiness and setup-worker load balance in make-to-order manufacturing

    Morinaga Y.

    2014 Joint 7th International Conference on Soft Computing and Intelligent Systems, SCIS 2014 and 15th International Symposium on Advanced Intelligent Systems, ISIS 2014     page: 87 - 94   2014.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/SCIS-ISIS.2014.7044681

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  38. Solo pool-punishers defeat free-riders through individual learning in compulsory public goods games

    Sano Mitsuru, Nagasawa Kenta, Nagao Masahiro

    Journal of Human Environmental Studies   Vol. 12 ( 2 ) page: 181 - 189   2014

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    Human societies are organized around cooperative and altruistic interactions. Natural selection, however, favors selfish and strong individuals who maximize their own resources at the expense of others. Although many previous studies with average payoffs have developed mechanisms for resolving the cooperation dilemma, they have a severe problem. Estimating the average values requires sufficient knowledge of the payoffs for all players in all public goods games (PGGs), which is difficult to achieve in practice. People make estimates every day based on insufficient knowledge. The transition probabilities ought to be therefore calculated based on known payoffs rather than on the average. Through this individual learning, we show that pool-punishers can overcome free-riders to establish stable cooperation within a society without help from non-participants or players using other strategies, even with a small multiplier (r) of public goods. This scenario requires the punishment that the free-riders receive to be greater than the cost to the pool-punishers. We also demonstrate that smaller population sizes and higher participation rates engender greater fixation probabilities for cooperation.

    DOI: 10.4189/shes.12.181

    CiNii Research

  39. An all-solid-state rechargeable aluminum-air battery with a hydroxide ion-conducting Sb(V)-doped SnP2O7 electrolyte

    Takashi Hibino, Kazuyo Kobayashi, Masahiro Nagao

    Journal of Materials Chemistry a   Vol. 1 ( 47 ) page: 14844 - 14848   2013

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    DOI: 10.1039/c3ta12707a

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  40. QOL指標と維持費用に基づく撤退・集結市街地の遺伝的アルゴリズムを用いた選定方法 Reviewed

    長尾征洋、青野隆仁、戸川卓哉、加藤博和、佐野充

    土木計画学研究・論文集   Vol. 29   page: I_339-I_348   2012.12

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  41. Alternating-Current Electrolysis for the Production of Phenol from Benzene

    Lee Byungik, Naito Hiroto, Nagao Masahiro, Hibino Takashi

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   Vol. 51 ( 28 ) page: 6961 - 6965   2012

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    DOI: 10.1002/anie.201202159

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  42. Hydroxide Ion Conducting Antimony(V)-Doped Tin Pyrophosphate Electrolyte for Intermediate-Temperature Alkaline Fuel Cells

    Hibino Takashi, Shen Yanbai, Nishida Masakazu, Nagao Masahiro

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   Vol. 51 ( 43 ) page: 10786 - 10790   2012

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    DOI: 10.1002/anie.201205022

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  43. AN APPLICATION OF GENETIC ALGORITHM TO SELECT RETREAT AND COHESION AREAS

    NAGAO Masahiro, AONO Takahito, TOGAWA Takuya, KATO Hirokazu, SANO Mitsuru

    Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management)   Vol. 68 ( 5 ) page: I_339 - I_348   2012

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    Compact city is a promising urban form from a sustainability viewpoint, especially in developed countries. For urban planners, however, it is difficult to determine which areas should be expected to retreat and which should be concentrated. This paper discusses the morphology of an urban area after a retreat and concentration policy is implemented. The authors design and implement a genetic algorithm to determine areas that should retreat and those where concentration should occur to secure sustainability of a real local city. Changes in various indices related with Quality Of Life (QOL) and the urban forms that emerge are discussed. To evaluate this optimization technique, we focus on reducing maintenance expenses and improving the QOL within city government budget constraints. It is found that, in least maintenance cost option, people living in old houses/buildings or low land price areas may leave those districts and re-concentrate into areas where transport is convenient such as around train stations and national routes. In QOL maximization option, people living in the suburbs where transport is relatively inconvenient may move to more accessible areas. In medium option between least maintenance cost and most QOL, suburbs where land prices are low and where houses are old are the prior areas to retreat, followed by suburbs where transport is inconvenient. It is concluded that proposed optimization method, using a genetic algorithm for the evaluation of retreat and re-concentrate policies, is efficient and reliable.

    DOI: 10.2208/jscejipm.68.i_339

    CiNii Research

  44. An Application of Genetic Algorithm to Retreat and Re-concentration Area Selection - A Case Study for Joetsu City, Niigata Prefecture - Reviewed

    Takahito AONO, Masahiro NAGAO, Takuya TOGAWA, Hirokazu KATO and Mitsuru SANO

      Vol. 43   page: 284   2011.5

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  45. Compact bipolar plate-free direct methanol fuel cell stacks

    Xue Dong, Motohiro Takahashi, Masahiro Nagao and Takashi Hibino

    Chemical Communications   Vol. 47 ( 18 ) page: 5292 - 5294   2011

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    Fuel cells with a PtAu/C anode and a Pr-doped Mn2O3/C cathode were stacked without using a bipolar plate, and their discharge properties were investigated in a methanol aqueous solution bubbled with air. A three-cell stack exhibited a stack voltage of 2330 mV and a power output of 21 mW.

    DOI: 10.1039/c1cc10493d

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  46. Optimizing the Energy Management for a Medical Facility by Genetic Algorithm

    Nagao Masahiro, Takeuchi Yusuke, Sano Mitsuru

    Journal of Japan Society of Energy and Resources   Vol. 32 ( 5 ) page: 24 - 32   2011

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    The present study evaluated the optimized operation management of a cold air power system at a large-scale medical facility
    during the summer, when the air-conditioning cold load reaches the annual maximum. The evaluation was conducted with
    respect to energy costs, CO<sub>2</sub> emissions and robustness of the energy-supply system. Since there are a large number of
    possible solutions as to which machines and which refrigeration levels should be operated, a genetic algorithm (GA) was
    used to obtain approximate, applicable solutions stochastically, to determine a daily plan of operation for the refrigeration
    system in a timely manner. According to the operation management plan obtained from the GA, over 10% of the energy costs
    and the CO<sub>2</sub> emissions can be reduced by improved operation. The stability of the cold air power system when a large-sized
    photovoltaic system is installed or when one of the refrigeration units breaks down can also be evaluated by using the GA. In
    a medical faculty we taken up, the estimated reduction in CO<sub>2</sub> by adopting the photovoltaic system was calculated to be about
    16% compared to the current operation management plan. And also the stability of present energy-supply system was
    validated except for when the vapor-absorption-type refrigerator was down.

    DOI: 10.24778/jjser.32.5_24

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  47. Separator-free fuel cell stacks operating in a mixture of hydrogen and air

    Nagao Masahiro, Takahashi Motohiro, Hibino Takashi

    ENERGY & ENVIRONMENTAL SCIENCE   Vol. 3 ( 12 ) page: 1934 - 1940   2010.12

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    Fuel cells for vehicular and residential applications have encountered a key technical challenge in cost reduction. This challenge can be avoided by operating a fuel cell stack without the use of gas separators, which are expensive and voluminous and therefore comprise a significant portion of the cost of a fuel cell stack. Single-chamber fuel cells (SCFCs) have the potential of realizing such operation, because there is no need for separation between fuel and air. In this paper, we present a selective anode (PtAu/C) and cathode (Pr-doped Mn2O3/C) for respective electrochemical hydrogen oxidation and oxygen reduction reactions in a SCFC. A single cell with these electrodes operated at 50 °C generated an open-circuit voltage of 1204 mV and a peak power density of 50 mW cm-2 in a feed mixture of 80% hydrogen and 20% air at a flow rate of 30 mL min-1. The high selectivity of these electrodes also enabled the design of two different separator-free fuel cell stacks, parallel and perpendicular to the gas stream. Both cell stacks exhibited increasing stack voltage and power output almost proportionally to the increase in the number of single cells. These results demonstrate that the separator-free fuel cell stack shows high potential for a significant reduction of the cost of fuel cell systems. © The Royal Society of Chemistry.

    DOI: 10.1039/c0ee00288g

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  48. MFCAの経年解析の課題と月次簡易MFCAの提案

    佐野充,長尾征洋,杉本拓弥,江端祐也

    第15回商品開発・管理学会創立10周年記念全国大会講演・論文集     page: 130-135   2010.11

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  49. Electrochemical Property of Mg-doped LiMnPO4/C for Li-ion Battery

    Masahiro Nagao, Hiroki Ohmae, Miho Fujita, and Mitsuru Sano

    Meeting Abstract-Electrochemical Society   Vol. 901   page: 164   2009.5

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  50. *システムダイナミクスによる名古屋市下水道モデルの構築と環境改善対策シミュレーション

    長尾征洋、渡会育也、佐野充、栗本英和

    システムダイナミックス学会日本支部予稿集     page: 17-20   2009.5

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    今後世界的な問題となることが危惧されている水環境問題の解決策として、下水の適正処理が行われる条件をシステムダイナミクスの手法を用いて導出した。本モデルで越流の予測とその程度の評価を行うことができた。

  51. A Single-Chamber SOFC Stack: Energy Recovery from Engine Exhaust

    Nagao M., Yano M., Okamoto K., Tomita A., Uchiyama Y., Uchiyama N., Hibino T.

    FUEL CELLS   Vol. 8 ( 5 ) page: 322 - 329   2008.10

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    DOI: 10.1002/fuce.200800017

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  52. De-NOx reactor and NOx sensor using In3+-doped SnP2O7 with PtRhBa/C electrode

    Nagao Masahiro, Yoshii Takeshi, Namekata Yousuke, Teranishi Shinya, Sano Mitsuru, Tomita Atsuko, Hibino Takashi

    SOLID STATE IONICS   Vol. 179 ( 27-32 ) page: 1655 - 1661   2008.9

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    DOI: 10.1016/j.ssi.2008.03.033

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  53. Pt-free intermediate-temperature fuel cells

    Heo Pilwon, Shibata Hidetaka, Nagao Masahiro, Hibino Takashi

    SOLID STATE IONICS   Vol. 179 ( 27-32 ) page: 1446 - 1449   2008.9

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    DOI: 10.1016/j.ssi.2007.12.090

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  54. Direct dimethyl ether fuel cells at intermediate temperatures

    Heo Pilwon, Nagao Masahiro, Sano Mitsuru, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 155 ( 1 ) page: B92 - B95   2008

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    DOI: 10.1149/1.2803509

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  55. Proton conduction in Sn(0.95)Al(0.05)P(2)O(7)-PBI-PTFE composite membrane

    Heo Pilwon, Kajiyama Norikazu, Kobayashi Kazuyo, Nagao Masahiro, Sano Mitsuru, Hibino Takashi

    ELECTROCHEMICAL AND SOLID STATE LETTERS   Vol. 11 ( 6 ) page: B91 - B95   2008

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    DOI: 10.1149/1.2897758

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  56. *A Single-Chamber SOFC Stack Operating in Engine Exhaust Reviewed

    Masaya Yano, Masahiro Nagao, Kohsuke Okamoto, Atsuko Tomita, Yasuyuki Uchiyama, Naoki Uchiyama, and Takashi Hibino

    Electrochemical and Solid-State Letters   Vol. 11 ( 3 ) page: B29-B33   2007.12

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    Heat engines emit huge amounts of exhaust which contain considerable quantities of heat and chemical energies. An increasing public awareness of global warming and oil depletion has required the development of innovative methods of recovering energy from such exhaust. A promising approach is to produce electricity from unburned fuel by using a fuel cell system. The exhaust includes cracked-light hydrocarbons, offering the possibility of applying this system to a power generator. Solid oxide fuel cells (SOFCs) can work at elevated temperatures but have poor thermal and mechanical shock resistance. In this study, we address this problem by operating the fuel cell system in a single-chamber mode, wherein no separation between fuel and oxidant gases is required. This operation provides high tolerance toward thermal cycling and breakage of the electrolyte. As a result, a twelve-cell stack exhibits stable and high performance in the exhaust from a motorcycle.

  57. Selective catalytic reduction of NOx by H-2 using proton conductors as catalyst supports

    Tomita Atsuko, Yoshii Takeshi, Teranishi Shinya, Nagao Masahiro, Hibino Takashi

    JOURNAL OF CATALYSIS   Vol. 247 ( 2 ) page: 137 - 144   2007.4

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    DOI: 10.1016/j.jcat.2007.02.001

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  58. Proton Conduction in In3+-doped SnP2O7 with Various P/(Sn+In) Ratios Reviewed

    Masahiro Nagao, Toshio Kamiya, Pilwon Heo, Takashi Hibino, Mitsuru Sano, Atsuko Tomita

    ECS Transaction   Vol. 2 ( 10 ) page: 43   2007

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    A proton conducting, 10 mol% In3+-doped SnP2O7 was characterized by TGA, TEM measurement, and electrochemical techniques. We prepared Sn0.9In0.1P2{plus minus}xO7{plus minus}x samples with various P/(Sn+In) molar ratios from 1.7 to 2.6. Sn0.9In0.1P2O7 with a stoichiometric P/(Sn+In) molar ratio of 2.0 showed a proton conductivity of about 0.19 S cm-1 at 250oC under unhumidified conditions. When the P/(Sn+In) molar ratios were over 2.0, amorphous layer composed of phosphorus compounds were observed over the surface of Sn0.9In0.1P2O7 particles. The proton conductivity slightly increased with increasing the P/(Sn+In) molar ratios from 2.0 to 2.6. It is considered that the amorphous layer enhanced the proton conductivity by surface conduction. On the other hand, the thermal stability of this amorphous layer during heating-cooling cycle was not enough high to apply to electrochemical devises. It is important to prepare Sn0.9In0.1P2O7 with the P/(Sn+In) molar ratio of 2.0 to achieve both sufficient proton conductivity and high thermal stability.

  59. A high-performance Mo2C-ZrO2 anode catalyst for intermediate-temperature fuel cells

    Heo Pilwon, Nagao Masahiro, Sano Mitsuru, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 154 ( 1 ) page: B53 - B56   2007

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    Anode performance of non-Pt catalysts for hydrogen oxidation was investigated in intermediate-temperature proton exchange membrane fuel cells. Molybdenum carbide (Mo2 C) showed the highest catalytic activity among the transition metal carbides tested. Furthermore, the catalytic activity of Mo2 C was significantly improved by the addition of ZrO2 to the anode. Transmission electron microscopy and X-ray diffraction measurements revealed that Mo2 C was more highly dispersed in the Mo2 C- ZrO2 C than in the Mo2 CC, suggesting that the particle growth of Mo2 C was suppressed by the addition of ZrO2. We also tested the performance of a fuel cell using Mo2 C- ZrO2 C and Sn0.9 In0.1 P2 O7 as the anode and electrolyte materials, respectively, between 150 and 300°C. At 250°C or higher, the Mo2 C- ZrO2 C anode showed a cell performance comparable to that of the PtC anode. However, cell performance was strongly dependent on the operating temperature, reflecting that the catalytic activity of Mo2 C- ZrO2 was greatly lowered by the decrease in operating temperature. Thus it was concluded that the Mo2 C- ZrO2 catalyst is a promising alternative anode material to Pt, especially at intermediate temperatures. © 2006 The Electrochemical Society.

    DOI: 10.1149/1.2382268

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  60. Sn0.9In0.1P2O7-based organic/inorganic composite membranes application to intermediate-temperature fuel cells

    Heo Pilwon, Nagao Masahiro, Kamiya Toshio, Sano Mitsuru, Tomita Atsuko, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 154 ( 1 ) page: B63 - B67   2007

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    DOI: 10.1149/1.2388737

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  61. Single-chamber SOFCs using dimethyl ether and ethanol

    Yano Masaya, Kawai Takanori, Okamoto Kohsuke, Nagao Masahiro, Sano Mitsuru, Tomita Atsuko, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 154 ( 8 ) page: B865 - B870   2007

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    DOI: 10.1149/1.2747326

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  62. Room-temperature hydrogen sensors based on an In3+-doped SnP2O7 proton conductor

    Tomita Atsuko, Namekata Yousuke, Nagao Masahiro, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 154 ( 5 ) page: J172 - J176   2007

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    DOI: 10.1149/1.2713702

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  63. Intermediate-temperature proton conduction in Al3+-doped SnP2O7

    Tomita Atsuko, Kajiyama Norikazu, Kamiya Toshio, Nagao Masahiro, Hibino Takashi

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 154 ( 12 ) page: B1265 - B1269   2007

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    DOI: 10.1149/1.2789296

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  64. A proton-conducting In3+-doped SnP2O7 electrolyte for intermediate-temperature fuel cells

    Nagao M, Takeuchi A, Heo P, Hibino T, Sano M, Tomitab A

    ELECTROCHEMICAL AND SOLID STATE LETTERS   Vol. 9 ( 3 ) page: A105 - A109   2006

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    DOI: 10.1149/1.2159298

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  65. Proton conduction in In<sup>3+</sup>-doped SnP<inf>2</inf>O<inf>7</inf> with various P/(Sn+In) ratios

    Nagao M., Heo P., Kamiya T., Hibino T., Sano M., Tomita A.

    ECS Transactions   Vol. 2 ( 10 ) page: 43 - 49   2006

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    A proton conducting, 10 mol% In3+-doped SnP2O 7 (Sn0.9In0.1 P2O7) was characterized by thermogravimetric analysis (TGA), transmission electron microscope (TEM) measurement, and electrochemical techniques. We prepared Sn0.9In0.1P2=x07±x samples with various P/(Sn+In) molar ratios from 1.7 to 2.6 through the control of the amount of phosphoric acid at the preparation process in order to examine electrochemical properties and thermal stabilities. Sn0.9In 0.1P2O7 with a stoichiometric P/(Sn+In) molar ratio of 2.0 showed a proton conductivity of about 0.19 S cm-1 at 250°C under unhumidified conditions. When the P/(Sn+In) molar ratios were over 2.0, the formation of amorphous layer composed of phosphorus compounds were observed over the surface of Sn0.9In0.1P 2O7 particles. The proton conductivity slightly increased with increasing the P/(Sn+In) molar ratios from 2.0 to 2.6. It is considered that the amorphous layer enhanced the proton conductivity by surface conduction. On the other hand, the thermal stability of this amorphous layer during heating-cooling cycle was not enough high to apply to electrochemical devises. As a result, it is important to prepare Sn0.9In0.1P 2O7 with the P/(Sn+In) molar ratio of 2.0 to achieve both sufficient proton conductivity and high thermal stability. Copyright The Electrochemical Society.

    DOI: 10.1149/1.2408942

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  66. Proton conduction in In3+-doped SnP2O7 at intermediate temperatures

    Nagao Masahiro, Kamiya Toshio, Heo Pilwon, Tomita Atsuko, Hibino Takashi, Sano Mitsuru

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 153 ( 8 ) page: A1604 - A1609   2006

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    DOI: 10.1149/1.2210669

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  67. Performance of an intermediate-temperature fuel cell using a proton-conducting Sn0.9In0.1P2O7 electrolyte

    Heo P, Shibata H, Nagao M, Hibino T, Sano M

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 153 ( 5 ) page: A897 - A901   2006

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    DOI: 10.1149/1.2183927

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  68. Intermediate-temperature NOx sensor based on an In3+-doped SnP2O7 proton conductor

    Nagao M, Namekata Y, Hibino T, Sano M, Tomita A

    ELECTROCHEMICAL AND SOLID STATE LETTERS   Vol. 9 ( 6 ) page: H48 - H51   2006

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    DOI: 10.1149/1.2193073

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  69. Electrochemical reduction of NOx at intermediate temperatures using a proton-conducting In3+-doped SnP2O7 electrolyte

    Nagao M, Yoshii T, Hibino T, Sano M, Tomita A

    ELECTROCHEMICAL AND SOLID STATE LETTERS   Vol. 9 ( 2 ) page: J1 - J4   2006

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    DOI: 10.1149/1.2149213

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  70. Comparative performance of anode-supported SOFCs using a thin Ce0.9Gd0.1O1.95 electrolyte with an incorporated BaCe0.8Y0.2O3-alpha layer in hydrogen and methane

    Tomita A, Teranishi S, Nagao M, Hibino T, Sano M

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   Vol. 153 ( 6 ) page: A956 - A960   2006

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    DOI: 10.1149/1.2186184

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  71. A high performance Pt-free anode for intermediate-temperature fuel cells

    Heo P., Nagao M., Sano M., Hibino T.

    ECS Transactions   Vol. 3 ( 1 ) page: 453 - 458   2006

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    Proton exchange membrane fuel cells (PEMFCs) are among the most promising power sources for vehicular and residential applications because of their clean and efficient energy conversion. However, these fuel cells require expensive Pt-based electrodes, which raise the cost of fuel-cell systems considerably. Here, we propose an approach to solving this problem by combining a molybdenum carbide (Mo2C) catalyst with an In3+-doped SnP 2O7 electrolyte. The resulting fuel cell can operate in the temperature range of 150 to 300°C, providing the high catalytic activity of Mo2C for electrochemical hydrogen oxidation, which is comparable to that of a Pt anode catalyst. Another important advantage of this fuel cell is that the Mo2C anode catalyst showed perfect tolerance to 10%CO. copyright The Electrochemical Society.

    DOI: 10.1149/1.2356166

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  72. 「総説」MP2O7系固体電解質のプロトン導電性とその応用

    長尾征洋, 冨田衷子, 日比野高士, 佐野充

    電気化学および工業物理化学   Vol. 73   page: 846-850   2005

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    200度程度で作動するプロトン導電体に関する報告を中心に、世界の開発動向をまとめた総説である。

  73. Single-Chamber SOFCs with a Ce0.9Gd0.1O1.95 Electrolyte Film for Low-Temperature Operation Reviewed

    Atsuko Tomita, Daisuke Hirabayashi, Takashi Hibino, Masahiro Nagao, Mitsuru Sano

    Electrochemical and Solid-State Letters   Vol. 8 ( 1 ) page: A63-A65   2004.11

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    Single-chamber solid oxide fuel cells (SOFCs) with an anode-supported Ce0.9Gd0.1O1.95 electrolyte were operated in a mixture of butane and air at furnace temperatures of 200-300°C. The electromotive force (emf) of the cell and the voltage drop were strongly influenced by the catalytic activity of the anode for the partial oxidation of butane. The promotion of hydrogen formation by the addition of Ru to the anode caused an increase in the emf and a reduction in the voltage drop. As a result, stable power densities of 44 and 176 mW cm–2 were obtained at 200 and 300°C, respectively.

  74. Design of a Reduction-Resistant Ce0.8Sm0.2O1.9 Electrolyte Through Growth of a Thin BaCe1–xSmxO3– Layer over Electrolyte Surface Reviewed

    Daisuke Hirabayashi, Atsuko Tomita, Takashi Hibino, Masahiro Nagao, Mitsuru Sano

    Electrochemical and Solid-State Letters   Vol. 7 ( 10 ) page: A318-A320   2004.9

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    A method that can block off electronic current through a samaria-doped ceria (SDC, Ce0.8Sm0.2O1.9) electrolyte is proposed. A thin BaCeO3-based layer 12 &micro;m thick was grown by a solid-state reaction of the electrolyte substrate and a BaO film deposited previously over the substrate surface at 1500°C. A homogeneous junction between the layer and the electrolyte was formed, thus allowing no delamination and cracking of the layer. Tolerance of this layer to CO2 was high enough to suppress decomposition into BaCO3 and CeO2. Open-circuit voltages of a hydrogen-air fuel cell with the coated SDC electrolyte were near 1 V or more in the range of 600-950°C. The resulting peak power density was higher than that of a fuel cell with an uncoated SDC electrolyte.

  75. Solid oxide fuel cells operating without using an anode material Reviewed

    Daisuke Hirabayashi, Atsuko Tomita, Munuel E. Brito, Takashi Hibino, Ushio Harada, Masahiro Nagao, Mitsuru Sano

    Solid State Ionics   Vol. 168 ( 1 ) page: 23-29   2004.3

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    We proposed a new type of solid oxide fuel cell (SOFC) operating without using an anode material, where the anode was spontaneously formed by reduction of the electrolyte surface under reducing gas conditions. A BaCe0.76Y0.20Pr0.04O3−α electrolyte most successfully met this criterion. This material showed high mixed protonic–electronic conduction, whereas the open circuit voltage (OCV) of the cell was slightly lower than the theoretical value. The resulting SOFC exhibited reasonable fuel cell performances together with a good stability to thermal and redox cyclings and high resistance to carbon deposition up to 800 °C for dry methane, ethane, and propane.

    Author Keywords: Solid oxide fuel cells; BaCe0.76Y0.20Pr0.04O3−α; Anode material

  76. SOFC-type microreactors that generate hydrogen for PEFC applications Reviewed

    Atsuko Tomita, Daisuke Hirabayashi, Masahiro Nagao, Mitsuru Sano, Takashi Hibino

    Solid State Ionics   Vol. 174   page: 9-13   2004

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    Language:English   Publishing type:Research paper (scientific journal)  

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Books 2

  1. 理系基礎化学実験 第3版

    村田静昭、伊藤英人、珠玖良昭、長尾征洋( Role: Joint author ,  無機イオンの反応と平衡)

    学術図書出版社  2022.2 

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    Language:Japanese

  2. *Nanoionics―Recent Advances and Prospect―

    Shu Yamaguchi, Masahiro Nagao, Takashi Hibino, Mitsuru Sano( Role: Joint author)

    2008.2 

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    Language:Japanese

Presentations 7

  1. Biomass and Plastic Wastes as Fuels for Electrolysis and Fuel Cells Invited International conference

    Masahiro Nagao

    Japan International Conference on Recycling and Waste Management 

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    Event date: 2020.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Webinar   Country:Japan  

  2. Direct Biomass Fuel Cell Using Wood Sawdust And Pulp As Fuels At Intermediate Temperature Invited International conference

    Masahiro Nagao, Takashi Hibino, Kazuyo Kobayashi, Peiling Lv, Shinya Teranishi, Toshiyuki Mori

    IUMRS-ICA 2017 

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    Event date: 2017.8 - 2017.9

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Kyoto, Japan   Country:Japan  

  3. Energy and Environmental Devices Using Doped Tin Phosphates as a Solid State Electrolyte Invited International conference

    Masahiro Nagao

    International Conference on Small Science 2015 

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    Event date: 2015.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Thailand   Country:Thailand  

  4. 水酸化物イオン導電体Sn0.92Sb0.08P2O7を電解質に使用したアルミニウム・空気二次電池の開発 International conference

    日比野高士,小林和代,長尾征洋

    第54回電池討論会 

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    Event date: 2013.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪   Country:Japan  

  5. Flexible job shop scheduling problem with balancing set-up workers' load in make-to-order manufacturing

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  6. システムダイナミクスによる名古屋市下水道モデルの構築と環境改善対策シミュレーション

    長尾征洋*、渡会育也*、青野隆仁*、佐野充*、栗本英和*

    JSDカンファレンス2009 

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    Event date: 2009.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  7. プロセス工学における研究の多様性と方向性の基礎調査

    ○中野 梓・栗本 英和・長尾 征洋

    化学工学会 第73年会 

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    Event date: 2008.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

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KAKENHI (Grants-in-Aid for Scientific Research) 5

  1. Bifunctional PM sensor for real-time monitoring of particulate matter

    Grant number:17K14834  2017.4 - 2020.3

    Nagao Masahiro

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    Authorship:Principal investigator 

    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    In this research project, a bifunctional sensor to measure and purify particulate matter (PM) in diesel exhaust gas was developed in response to the growing interest in air pollutants. The carbon in the PM was burned by using the active oxygen generated during the electrolysis of water vapor in the exhaust gas. PM concentration can be estimated by detecting the current flowing through the sensor. It was also found that the carbon is burned by the electric current, which proves its self-purification potential. Furthermore, sensitivity of the proposed sensor was improved by developing a highly active electrocatalyst.

  2. Development of hydroxide ion conductors for intermediate-temperature alkaline fuel cells

    Grant number:25288106  2013.4 - 2018.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Hibino Takashi, NAGAO Masahiro

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    Anion exchange membranes are widely viewed as promising candidates for the electrolyte component; however, the operating temperature of these membranes has been limited to 80 °C. The U.S. Department of Energy has recommended development of fuel cells capable of operating at temperatures up to 120 °C to reduce the cost of fuel cell vehicles. Here, we report SnP2O7-based hydroxide ion conductors and an intermediate-temperature fuel cell with the optimized electrolyte component. Hydroxide ion exchange capability was introduced into the bulk of SnP2O7 by the partial substitution of Sn4+ cations with high valency cations, such as Sb5+, Nb5+, V5+, and Ta5+. Consequently, Sn0.92Sb0.08P2O7 exhibited the highest hydroxide ion conductivity of 0.04 S cm-1 at 200 °C. Furthermore, a H2/air fuel cell with this membrane generated a power density of 147 mW cm-2 at 200°C. Notably, this membrane could also be utilized as the electrolyte component for rechargeable aluminum-air batteries.

  3. NOx reduction reaction using hydroxide ion conductor

    Grant number:25870308  2013.4 - 2016.3

    NAGAO Masahiro

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    Authorship:Principal investigator 

    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

    With the growing interest in recent environmental problems, monitoring and purification technology of nitrogen oxides released into the atmosphere from diesel engines has been attracting attention. In this study, we focus on electrolysis phenomena that leads to detoxification of the nitrogen oxides. Ionic conducting ceramics were applied for the electrochemical reduction of nitrogen oxides. As a result, nitrogen oxides were reduced to harmless nitrogen by active species generated by electrolysis of water. Because the electrochemical reaction occur in the both electrodes, alternate current will become applicable instead of direct current. Simultaneous reduction of nitrogen oxides at both electrodes suggests the simplification and downsizing of the devices for sensing and purification of nitrogen oxides.

  4. Development of Proton-Conducting Materials and Experimental Study on Mechanism of Proton Transport

    Grant number:17350068  2005 - 2008

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SANO Mitsuru, HIBINO Takashi, NAGAO Masahiro

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

  5. Development of High-Temperature PEM Fuel Cells Using Proton-Conducting Metal Diphosphates

    Grant number:17350091  2005 - 2008

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    HIBINO Takashi, SANO Mitsuru, NAGAO Masahiro

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

 

Teaching Experience (On-campus) 29

  1. 問題解決・課題解決の科学2

    2021

  2. 物質環境システム論

    2021

  3. Laboratory in Chemistry

    2020

  4. Material systems and Environment

    2020

  5. Project Finding in Urban Environment

    2020

  6. 計算情報学11

    2020

  7. 問題解決・課題解決の科学2

    2020

  8. 化学実験

    2018

  9. 環境フィールドセミナー1

    2018

  10. 環境物質学実験1

    2018

  11. 環境物質学2

    2018

  12. 環境物質学2

    2017

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    無機化学基礎

  13. 環境フィールドセミナー1

    2017

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    環境・エネルギー関連施設を訪問

  14. 環境物質学実験1

    2017

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    実験

  15. 物質環境システム論

    2017

  16. 化学実験

    2017

  17. 化学実験

    2016

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    化学実験

  18. 環境物質学2

    2016

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    基礎無機化学

  19. 環境物質学実験1

    2016

  20. 環境フィールドセミナー1

    2016

  21. 物質環境システム論

    2016

  22. 環境フィールドセミナー1

    2015

  23. 環境物質学実験1

    2015

  24. 環境フィールドセミナー1

    2014

  25. 環境物質学実験1

    2014

  26. 環境物質学実験1

    2013

  27. 環境物質学実験1

    2012

  28. 環境物質学実験1

    2011

  29. 環境物質学実験1

    2010

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Teaching Experience (Off-campus) 1

  1. 社会と情報B

    2020.9 - 2022.3 Daido University)

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    Level:Undergraduate (specialized) 

 

Social Contribution 1

  1. クラウドファンディング「ゴミがエネルギーに!地域社会で取り組むゴミゼロ×創エネ活動」

    Role(s):Planner, Investigater

    READYFOR株式会社  2020.5

Media Coverage 1

  1. 可燃ごみを電池のエネルギーに/実用化目指して開発進む/名古屋大学 Newspaper, magazine

    日報ビジネス株式会社  週刊循環経済新聞  2020.6

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    Author:Other