2014 Fiscal Year Final Research Report
Development of a metalloporphyrin network catalyst for fuel cell with an oxygen reduction reaction process different from the platinum surface
Project/Area Number |
24655119
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Functional materials chemistry
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Research Institution | Kanazawa University |
Principal Investigator |
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Keywords | 燃料電池 / 金属ポルフィリン / イオンネットワーク / 酸素還元 / 開回路電位 |
Outline of Final Research Achievements |
I tried proof of the new oxygen reduction mechanism that was different from the platinum system of heat-treatment barium ion bridging iron porphyrin, which applicants developed as a platinum alternative catalyst for polymer electrolyte fuel cell and evaluated movement stability for a long term under the acidity that was a fault of metalloporphyrin. Iron (III) porphyrin, which became the new high oxidation state to occur because of heat-treatment, adsorbs oxygen molecules with four points of iron and nitrogen in the ring, which faced each other by the dimer structure. As a result, iron (III) caused electric charge separation to iron (IV) and indicated the process such as 4 electron reduction reactions of oxygen happened. On the other hand, a barium ion assists maintenance of the porphyrin dimer structure, and this assistance is important to long-term movement, it was acid resistant and the thing which manifests oxidation resistance was also made clear.
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Free Research Field |
電気化学
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