[NiFe]Hydrogenase from  Citrobacter  sp. S‐77 Surpasses Platinum as an Electrode for H 2  Oxidation Reaction | Zendy

Matsumoto Takahiro | Zendy; Eguchi Shigenobu | Zendy; Nakai Hidetaka | Zendy; Hibino Takashi | Zendy; Yoon KiSeok | Zendy; Ogo Seiji | Zendy

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

Author(s) -

Matsumoto Takahiro,

Eguchi Shigenobu,

Nakai Hidetaka,

Hibino Takashi,

Yoon KiSeok,

Ogo Seiji

Publication year - 2014

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201404701

Subject(s) - electrode , platinum , anode , cathode , citrobacter , carbon monoxide , hydrogen , hydrogenase , standard hydrogen electrode , inorganic chemistry , chemistry , materials science , catalysis , working electrode , electrochemistry , organic chemistry , biochemistry , escherichia coli , enterobacteriaceae , gene

Reported herein is an electrode for dihydrogen (H 2 ) 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.

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