2010 Fiscal Year Final Research Report
Development of highly active and durable Pt catalysts covered with silica
| Project/Area Number |
20360365
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Catalyst/Resource chemical process
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| Research Institution | Kyushu University |
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Principal Investigator |
TAKENAKA Sakae Kyushu University, 大学院・工学研究院, 准教授 (10302936)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 固体高分子形燃料電池 / Ptカソード触媒 / 耐久性 / シリカ被覆 / Pt-Co合金触媒 |
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| Research Abstract |
Pt catalysts at cathode in polymer electrolyte fuel cells (PEFC) are deactivated due to the aggregation of Pt metal particles and the dissolution and subsequent deposition of Pt metal, because the Pt catalysts should work under very severe conditions such as low pH, highly positive potential and oxygen atmosphere. We covered carbon-supported Pt catalysts with silica layers a few nanometers thick in order to improve the durability of Pt metal under the cathode conditions. The Pt catalysts covered with silica showed high activity and excellent durability for the oxygen reduction reaction. In addition, the coverage with silica can be applied to the development of highly active and durable Pt-Co alloy catalysts.
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