Faculty Profiles - HIBINO, Takashi

Papers - HIBINO, Takashi

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[NiFe]Hydrogenase from Citrobacter sp S-77 Surpasses Platinum as an Electrode for H-2 Oxidation Reaction Reviewed

Matsumoto Takahiro, Eguchi Shigenobu, Nakai Hidetaka, Hibino Takashi, Yoon Ki-Seok, Ogo Seiji

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 53 ( 34 ) page： 8895 - 8898 2014.8

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Angewandte Chemie - International Edition

Reported herein is an electrode for dihydrogen (H2) oxidation, and it is based on [NiFe]Hydrogenase from Citrobacter sp. S-77 ([NiFe] S77). It has a 637 times higher mass activity than Pt (calculated based on 1 mg of [NiFe]S77 or Pt) at 50 mV in a hydrogen half-cell. The [NiFe]S77 electrode is also stable in air and, unlike Pt, can be recovered 100% after poisoning by carbon monoxide. Following characterization of the [NiFe]S77 electrode, a fuel cell comprising a [NiFe] S77 anode and Pt cathode was constructed and shown to have a a higher power density than that achievable by Pt. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

DOI： 10.1002/anie.201404701

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Fe_o.4Ta_0.5P₂O₇-based composite membrane for high-temperature, low-humidity proton exchange membrane fuel cells Reviewed

Pilwon Heo, Yanbai Shen, Keijiro Kojima, Chanho Pak, Kyoung Hwan Choi, Takashi Hibino

Electrochimica Acta Vol. 128 page： 287 - 291 2014.5

Mixed Potential Response for Hydrocarbons in a Proton-Conductive Electrochemical Cell Operated at Room Temperature Reviewed

Hibino Takashi, Kobayashi Kazuyo

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 161 ( 5 ) page： H326 - H331 2014

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of the Electrochemical Society

Themixed potential response for various hydrocarbons at room temperaturewas investigated using proton-conductive Sn0.9In0.1P 2O7 as an electrolyte. Among the tested electrodes, Pt/C exhibited the most negative potential in a feed mixture of 1000 ppm propene, 10% oxygen, and ca. 3% water vapor. The potential of this electrode was further shifted to a more negative value by the addition of Sn0.9In 0.1P2O7 to the electrode. The resultant potential vs. an air electrode reached ?78 mV at 1000 ppm propene, which is a significant deviation from that calculated from the Nernst equation. This non-Nernstian potential also became enhanced as the concentration and carbon number of the hydrocarbon increased, with the C-C linkage unsaturated, and with a branched chain structure. These enhancement effects could be explained by the polarization curves for hydrocarbon and oxygen, where CO2 formation through hydrocarbon oxidation and water vapor formation through oxygen reduction were in competition with each other. It should be emphasized that the heterogeneous catalytic reaction of the hydrocarbon with oxygen did not occur over the electrode, which allowed not only for a simple mixed potential theory, but also for the potential properties to be independent of the supply gas flow rate. © 2014 The Electrochemical Society. All rights reserved.

DOI： 10.1149/2.054405jes

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Erratum: Room-temperature proton transport and its effect on thermopower in a solid ionic semiconductor, TTFCOONH<inf>4</inf> (Journal of Materials Chemistry A (2013) 1 (5089-5096) (DOI:10.1039/C3TA00011G)) Reviewed

Kobayashi Y., Fujii T., Terasaki I., Kino H., Jin Y., Hibino T., Kobayashi T., Nishibori E., Sawa H., Yoshikawa H., Terauchi T., Sumi S.

Journal of Materials Chemistry A Vol. 1 ( 48 ) 2013.12

Oxygen reduction reaction over nitrogen-doped graphene oxide cathodes in acid and alkaline fuel cells at intermediate temperatures Reviewed

Takashi Hibino, Kazuyo Kobayashi, Pilwon Heo

Electrochimica Acta Vol. 112 page： 82 - 89 2013.12

Organometallic Catalysts for Use in a Fuel Cell Reviewed

Matsumoto Takahiro, Kim Kyoungmok, Nakai Hidetaka, Hibino Takashi, Ogo Seiji

CHEMCATCHEM Vol. 5 ( 6 ) page： 1368 - 1373 2013.6

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

We report the successful increase in performance of a fuel cell based on organometallic catalysis. An organometallic [NiIIRuIV] peroxo complex functions as cathode catalyst and was designed following mechanistic consideration of the cell. It was confirmed that the organometallic [NiIIRuIV] peroxo catalyst could function in the fuel cell with a 240% increase in power output over our previous systems. This organometallic catalyst can act in both solid and solution phases and allows observation of the mechanism, hence providing us further opportunity for future improvement. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

DOI： 10.1002/cctc.201200595

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Proton-conductor-supported ultra-low loading Pt-Rh three-way catalysts Reviewed

Xue Dong, Masakazu Nishida, Takashi Hibino

The Journal of Physical Chemistry C Vol. 117 ( 4 ) page： 1827 - 1832 2013.1

An intermediate-temperature alkaline fuel cell using an Sn_0.92Sb_0.08P₂O₇-based hydroxide-ion-conducting electrolyte and electrodes Reviewed

Takashi Hibino, Kazuyo Kobayashi

Journal of Materials Chemistry A Vol. 1 ( 4 ) page： 1134 - 1140 2013

Hydroxide ion conduction in molybdenum(VI)-doped tin pyrophosphate at intermediate temperatures Reviewed

Takashi Hibino, Kazuyo Kobayashi

Journal of Materials Chemistry A Vol. 1 ( 23 ) page： 6934 - 6941 2013

Intermediate-temperature alkaline fuel cells with non-platinum electrodes Reviewed

Takashi Hibino, Kazuyo Kobayashi

Journal of Materials Chemistry A Vol. 1 ( 24 ) page： 7019 - 7022 2013

Design of proton-conducting Sn_0.95Al_0.05P₂O₇ with mesoporous structure Reviewed

Takashi Hibino, Kazuyo Kobayashi, Satoru Fujita

Journal of Materials Chemistry A Vol. 1 ( 42 ) page： 13082 - 13088 2013

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

Takashi Hibino, Kazuyo Kobayashi, Masahiro Nagao,

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

Room-temperature proton transport and its effect on thermopower in a solid ionic semiconductor, TTFCOONH4 Reviewed

Kobayashi Yuka, Fujii Takenori, Terasaki Ichiro, Kino Hiori, Jin Yongcheng, Hibino Takashi, Kobayashi Tetsuya, Nishibori Eiji, Sawa Hiroshi, Yoshikawa Hideki, Terauchi Takeshi, Sumi Satoshi

JOURNAL OF MATERIALS CHEMISTRY A Vol. 1 ( 16 ) page： 5089 - 5096 2013

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Journal of Materials Chemistry A

Ammonium proton in a solid ionic semiconductor, TTFCOONH4, is shown to be mobile under anhydrous conditions at room temperature by the hydrogen concentration cell method. Isotope substituted TTFCOOND4 exhibits a 2.2 H/D isotope effect in ion carrier mobility with TTFCOONH 4. First-principles calculations reveal that an efficient proton-transfer pathway via low-barrier N⋯H+⋯N hydrogen bonds reduces the activation energy to 0.12 eV, which is quite small and comparable to that reported in a bulk water system. The ac conductivity of TTFCOONH4 and TTFCOOND4 is similar at room temperature, reflecting similar hole carrier concentrations. In sharp contrast, the thermopower exhibits a large isotope effect: TTFCOONH4 shows 260 μV K-1, which is twice as large as that predicted by the hole carrier concentration and the value of TTFCOOND4, with 138 μV K-1. The 1.9 H/D isotope effect in thermopower closely relates to the 2.2 H/D isotope effect in ion carrier mobility. Proton carriers in the temperature gradient enhance thermopower without cancelling out the effect of holes in the solid state owing to possession of the same positive charge. © The Royal Society of Chemistry 2013.

DOI： 10.1039/c3ta00011g

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Intermediate-temperature, non-humidified proton exchange membrane fuel cell with a highly proton-conducting Fe_0.4Ta_0.5P₂O₇ electrolyte Reviewed

Yanbai Shen, Pilwon Heo, Chanho Pak, Hyuk Chang, Takashi Hibino

Electrochemistry Communications Vol. 24 ( 1 ) page： 82 - 84 2012.10

総説：中温プロトン伝導体のエネルギー・環境技術への応用

日比野高士

化学工業 Vol. 63 ( 10 ) page： 8-16 2012.10

A solid-state particulate matter sensor based on electrochemical oxidation of carbon by active oxygen Reviewed

Shen Y. B., Harada T., Teranishi S., Hibino T.

SENSORS AND ACTUATORS B-CHEMICAL Vol. 162 ( 1 ) page： 159 - 165 2012.2

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Sensors and Actuators, B: Chemical

The carbon oxidation activity and sensing performance of an electrochemical sensor incorporating a robust SnP 2O 7-SnO 2 composite ceramic as a solid electrolyte were investigated at an operating temperature of 200°C. Specific reactivity of the electrochemically formed active oxygen toward carbon was accomplished with a high current efficiency estimated from the four-electron reaction (C + 2H 2O → CO 2 + 4H + + 4e -). However, this reaction did not occur over the entire electrode layer, which resulted in low sensitivity and a slow response speed. This problem could be overcome by distributing a SnP 2O 7 ionomer over the working electrode at a level of several micrometers. Moreover, an additional benefit of the present sensor for practical applications is that little interference was encountered when sensing carbon at levels of 1000 ppm CO and 1000 ppm C 3H 8 in the sample gas. The resulting amperometric mode sensor could successfully produce a current signal that corresponded to the quantity of particulate matter (PM) in the bench test apparatus. These results demonstrate that the present sensor is able to continuously monitor the PM concentration while self-regenerating. © 2011 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.snb.2011.12.057

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Alternating current electrolysis for production of phenol from benzene Reviewed

Byungik Lee, Hiroto Naito, Masahiro Nagao, Takashi Hibino

Angewandte Chemie-International Edition Vol. 51 ( 28 ) page： 6961 - 6965 2012

Proton conduction in A^Ⅲ_0.5B^Ⅴ_0.5P₂O₇ compounds at intermediate temperatures Reviewed

Yanbai Shen, Keijiro Kojima, Masakazu Nishida, Pilwon Heo, Kyoung Hwan Choi, Hyuk Chang, Takashi Hibino

Journal of Materials Chemistry Vol. 22 ( 30 ) page： 14907 - 14915 2012

Hydroxide ion conducting antimony(Ⅴ)-doped tin pyrophosphate electrolyte for intermediate-temperature alkaline fuel cells Reviewed

Takashi Hibino, Yanbai Shen, Masakazu Nishida, Masahiro Nagao

Angewandte Chemie-International Edition Vol. 51 ( 43 ) page： 10786 - 10790 2012

Electrochemical Oxidation of Benzene to Phenol Reviewed

Lee Byungik, Naito Hiroto, Hibino Takashi

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 51 ( 2 ) page： 440 - 444 2012

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Angewandte Chemie - International Edition

Gas-phase electrochemistry: The direct hydroxylation of benzene to phenol was investigated using an electrochemical cell. The production of phenol over a VO x anode was found to be significant at 50 °C. The resultant current efficiency for phenol production and selectivity toward phenol reached 76.5 and 94.7 %, respectively. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

DOI： 10.1002/anie.201105229

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Papers - HIBINO, Takashi