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    • 9. 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。
    • 10. 发明申请
    • Coated steel bipolar plates
    • 涂钢双极板
    • US20070015029A1
    • 2007-01-18
    • US11180835
    • 2005-07-12
    • Michael BudinskiGayatri VyasAugusto Kunrath NetoJohn Moore
    • Michael BudinskiGayatri VyasAugusto Kunrath NetoJohn Moore
    • H01M8/02H01M8/24
    • H01M8/021H01M8/0204H01M8/0206H01M8/0213H01M8/0228H01M2008/1095H01M2250/20Y02T90/32
    • In accordance with one embodiment of the present invention, an electrochemical conversion assembly comprises a plurality of electrochemical conversion cells and a plurality of electrically conductive bipolar plates. The electrochemical conversion cells are configured to communicate with first and second reactant supplies. Adjacent ones of the electrochemical conversion cells are separated by respective ones of the plurality of bipolar plates. The bipolar plates comprise an alloy comprising Fe and Cr. Respective surface portions of the bipolar plates are provided with electrically conductive, corrosion resistant layers that are placed in contact with portions of the electrochemical conversion cells. The corrosion resistant electrically conductive layers may comprise graphitic layers characterized predominantly by sp2 hybridized carbon-carbon bonding, molybdenum doped indium oxide layers, an electrically conductive Cr+N layer, or an electrically conductive MoSi2 layer.
    • 根据本发明的一个实施例,电化学转化组件包括多个电化学转换电池和多个导电双极板。 电化学转化电池被配置为与第一和第二反应物供应物连通。 相邻的电化学转化电池被多个双极板中的相应电极分离。 双极板包括包含Fe和Cr的合金。 双极板的相应表面部分设置有导电的耐腐蚀层,其被放置成与部分电化学转换电池接触。 耐腐蚀导电层可以包括主要由sp2杂化的碳 - 碳键合,钼掺杂的氧化铟层,导电Cr + N层或导电MoSi 2 +层表征的石墨层。