发明授权
- 专利标题: Catalytic coatings and fuel cell electrodes and membrane electrode assemblies made therefrom
- 专利标题(中): 催化涂层和由此制成的燃料电池电极和膜电极组件
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申请号: US09509849申请日: 2000-09-18
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公开(公告)号: US06610436B1公开(公告)日: 2003-08-26
- 发明人: Geoffrey Dearnaley , James H. Arps
- 申请人: Geoffrey Dearnaley , James H. Arps
- 主分类号: H01M490
- IPC分类号: H01M490
摘要:
Fuel cell electrodes comprising a minimal load of catalyst having maximum catalytic activity and a method of forming such fuel cell electrodes. The preferred method comprises vaporizing a catalyst, preferably platinum, in a vacuum to form a catalyst vapor. A catalytically effective amount of the catalyst vapor is deposited onto a carbon catalyst support on the fuel cell electrode. The electrode preferably is carbon cloth. The method reduces the amount of catalyst needed of a high performance fuel cell electrode to about 0.3 mg/cm2 or less, preferably to about 0.1 mg/cm2. The electrocatalytic layer formed comprises unique, rod-like structures.
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