发明名称 |
Composite ion exchange membrane for use in a fuel cell |
摘要 |
A composite membrane for use in a fuel cell membrane electrode assembly comprises a porous polymeric substrate and an impregnant partially filling the substrate such that the substrate comprises a first region having pores substantially filled with the impregnant, and a second substantially porous region. The impregnant comprises a cation exchange material. The cation exchange material covers one surface of the substrate in a dense surface layer, contiguous with the first region of the substrate. The substrate has greater than 10% residual porosity, and the composite membrane is substantially gas impermeable and has at least one substantially porous major surface.
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申请公布号 |
US6689501(B2) |
申请公布日期 |
2004.02.10 |
申请号 |
US20010866387 |
申请日期 |
2001.05.25 |
申请人 |
BALLARD POWER SYSTEMS INC. |
发明人 |
STONE CHARLES;SUMMERS DAVID A. |
分类号 |
C08J5/22;H01M8/02;H01M8/10;(IPC1-7):H01M8/02;H01M2/16 |
主分类号 |
C08J5/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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