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    • 15. 发明申请
    • Design strategies for corrosion mitigation
    • 减缓腐蚀设计策略
    • US20070059580A1
    • 2007-03-15
    • US11227771
    • 2005-09-15
    • Michael BudinskiBrian BradyHubert GasteigerKeith Newman
    • Michael BudinskiBrian BradyHubert GasteigerKeith Newman
    • H01M2/08H01M4/94H01M8/02
    • H01M8/0245H01M8/021H01M8/0258H01M8/0271H01M8/0284H01M8/04089H01M8/1023H01M8/1039Y02P70/56
    • Fuel cells are provided that are at least partially resistant to corrosion, including the use of components that are comprised of materials that are at least partially resistant to corrosion. The fuel cells include subgasket materials and designs, involving geometric arrangements of the subgasket that reduce oxygen permeation from, the cathode to the anode side of the membranes and/or hydrogen permeation from the anode to the cathode side of the membranes. In addition to using protonically non-conductive subgasket materials with lower oxygen and/or hydrogen permeabilities, versus ionomeric subgaskets which are protonically conducting and have high O2 permeation rates, the elimination of the microporous layer (e.g., coated onto the diffusion medium) directly beneath the permeable subgasket materials will also reduce production of corrosive species. The elimination of direct contact between the bipolar plate material surface and PFSA ionomer membrane material also prevents corrosion to the metal bipolar plates.
    • 提供至少部分抵抗腐蚀的燃料电池,包括使用由至少部分抵抗腐蚀的材料组成的部件。 燃料电池包括子衬垫材料和设计,其包括减小从膜的阴极到阳极侧的氧渗透和/或从膜的阳极到阴极侧的氢渗透的子衬垫的几何布置。 除了使用具有较低氧和/或氢渗透性的质子非导电子衬垫材料之外,对于质子导电并具有高O 2渗透速率的离聚物亚垫,除了微孔层(例如, 直接在可渗透的垫片材料下方涂覆到扩散介质上)也将减少腐蚀物质的产生。 消除双极板材料表面和PFSA离聚物膜材料之间的直接接触也可防止对金属双极板的腐蚀。