Robust hydrogenase for a fuel cell
| Project/Area Number |
26810038
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic chemistry
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 燃料電池 / ヒドロゲナーゼモデル / 水素 / 酸素 / バイオミメティクス / ヒドロゲナーゼ / モデル |
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| Outline of Final Research Achievements |
Reported herein is an electrode for 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.
O2-tolerant [NiFe] hydrogenases catalyze not only the conversion of H2 into 2H+ and 2e- but also the reduction of O2 to H2O. Chemists have sought to mimic such bifunctional catalysts with structurally simpler compounds to facilitate analysis and improvement. Herein, we report a new [NiFe]-based catalyst for O2 reduction via an O2 adduct. Structural investigations reveal the first example of a side-on iron(IV) peroxo complex.
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Report
(3 results)
Research Products
(24 results)
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[Journal Article] Synthesis and Structure of a Water-soluble μ-η1:η1-N2 Dinuclear RuII Complex with a Polyamine Ligand2016
Author(s)
K. Yoshimoto, T. Yatabe, T. Matsumoto, A. Robertson, H. Nakai, H. Tanaka, T. Kamachi, Y. Shiota, K. Yoshizawa, K. Asazawa, H. Tanaka, Seiji Ogo
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Journal Title
Chemistry Letters
Volume: 45
Issue: 2
Pages: 149-151
DOI
NAID
Related Report
Peer Reviewed / Open Access
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