| Budget Amount *help |
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2008: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
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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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