发明名称 |
METHOD FOR STABILIZING POLYELECTROLYTE MEMBRANE FILMS USED IN FUEL CELLS |
摘要 |
A novel method of altering extruded membrane films for PEM (polymer electrolyte membrane) fuel cells in such a manner that the membrane films swell substantially uniformly in both the in-plane x and y directions when immersed in water or ionomer solution is disclosed. The invention includes cutting a membrane film from an extruded membrane sheet in a diagonal orientation with respect to the membrane process direction of the membrane sheet. The membrane film exhibits reduced internal stress as compared to conventionally-prepared membrane films and allows a more even distribution of pressure in a fuel cell stack, thereby reducing the incidence of swollen membrane-induced failure mechanisms in the fuel cell stack. |
申请公布号 |
US2012115066(A1) |
申请公布日期 |
2012.05.10 |
申请号 |
US201113015152 |
申请日期 |
2011.01.27 |
申请人 |
FULLER TIMOTHY J.;DOUBLIS BEBA T.;GM GLOBAL TECHNOLOGY OPERATIONS LLC |
发明人 |
FULLER TIMOTHY J.;DOUBLIS BEBA T. |
分类号 |
H01M8/10 |
主分类号 |
H01M8/10 |
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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