2012 Fiscal Year Final Research Report
Creation of Surface Structures with High Corrosion Resistance forPt Catalyst of Fuel Cell
| Project/Area Number |
23760685
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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 |
Material processing/treatments
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| Research Institution | Tohoku University |
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Principal Investigator |
SUGAWARA Yu 東北大学, 大学院工学研究科, 助教 (40599057)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 腐食防食 / 電気化学 / 白金 / マイクロ電気化学セル |
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| Research Abstract |
The influence of crystal orientation and grain boundary on the electrochemical property of Pt was studied to improve the durability of Pt catalyst in polymer electrolyte fuel cell. A microelectrochemical cell system enabled the electrochemical measurements on single planes in a polycrystalline Pt, and it was found that higher current densities by Pt oxidation was detected on the Pt(110) surface than Pt(100). Grain boundaries caused the increase of the oxidation current. This result implies the grain boundary is a predominant site of oxidation in a polycrystalline Pt.
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