2014 Fiscal Year Final Research Report
Corrosion and Cell Performance of Polymer Electrolyte Membrane Fuel Cells with Metallic Bipolar Plates
| Project/Area Number |
24560868
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Iwate University |
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Principal Investigator |
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| Research Collaborator |
MYUNG Seung-Taek 世宗大学, ナノ材料工学部, 准教授
KUMAGAI Masanobu 大陽ステンレススプリング, 研究員
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 固体高分子形燃料電池 / セパレータ / 腐食 / 鉄 / ステンレス鋼 / 窒化 |
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| Outline of Final Research Achievements |
Few information was available on the corrosion environment for metallic bipolar plates, although metals are most promising material for bipolar plate of polymer electrolyte membrane fuel cells. In the present study, corrosion behavior of iron was studied both in real and simulated PEFC environments, in order to deduce the real PEFC corrosiveness. The results indicated that the corrosiveness increased as air proceeded toward an exit. Meanwhile, high nitrogen stainless steel was employed as a promising bipolar plate material and PEFC performance was evaluated with the bipolar plate of high nitrogen stainless steel. In order to solve the problem of high contact resistance with carbon gas diffusion layer accompanied by passivation, electrochemical nitriding method was introduced, which successfully improved the cell performance.
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| Free Research Field |
工学
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