Hydrogenase from citrobacter sp. S-77 surpasses platinum as an electrode for H2 oxidation reaction

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

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)8895-8898
Number of pages4
JournalAngewandte Chemie - International Edition
Volume53
Issue number34
DOIs
Publication statusPublished - Aug 18 2014

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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