发明授权
- 专利标题: Metallic bipolar plates with high electrochemical stability and improved water management
- 专利标题(中): 具有高电化学稳定性和改进水管理的金属双极板
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申请号: US11286962申请日: 2005-11-23
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公开(公告)号: US08470488B2公开(公告)日: 2013-06-25
- 发明人: Mahmoud H. Abd Elhamid , Gayatri Vyas , Youssef M. Mikhail , Thomas A. Trabold
- 申请人: Mahmoud H. Abd Elhamid , Gayatri Vyas , Youssef M. Mikhail , Thomas A. Trabold
- 申请人地址: US MI Detroit
- 专利权人: GM Global Technology Operations LLC
- 当前专利权人: GM Global Technology Operations LLC
- 当前专利权人地址: US MI Detroit
- 代理机构: Miller IP Group, PLC
- 代理商 John A. Miller
- 主分类号: H01M2/38
- IPC分类号: H01M2/38
摘要:
A flow field plate or bipolar plate for a fuel cell that includes a carbide coating that makes the bipolar plate conductive, hydrophilic and stable in the fuel cell environment. Suitable carbides include, but are not limited to, chromium carbide, titanium carbide, tantalum carbide, niobium carbide and zirconium carbide. The carbide coating is then polished or textured by a suitable process, such as laser or chemical etching, to provide a surface morphology that makes the coating more hydrophilic, and further reduces the contact resistance on its surface.
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