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    • 21. 发明申请
    • High durability fuel cell components with cerium salt additives
    • 高耐久性燃料电池组件与铈盐添加剂
    • US20070099053A1
    • 2007-05-03
    • US11262268
    • 2005-10-28
    • Matthew FreyDaniel PierpontSteven Hamrock
    • Matthew FreyDaniel PierpontSteven Hamrock
    • H01M8/10C08J5/22
    • H01M8/1051C08J5/2237C08J2327/18H01M8/1004H01M8/1023H01M8/1027H01M8/1032H01M8/1039H01M8/1058H01M8/1072H01M8/1081H01M2300/0091Y02E60/521Y02P70/56
    • A fuel cell membrane electrode assembly is provided comprising a polymer electrolyte membrane which comprises a polymer that comprises bound anionic functional groups, wherein the polymer electrolyte membrane additionally comprises cerium cations. In another aspect, a fuel cell membrane electrode assembly is provided comprising a polymer electrolyte membrane which comprises a polymer that comprises bound anionic functional groups, wherein at least a portion of the anionic functional groups are in acid form and at least a portion of the anionic functional groups are neutralized by cerium cations. In another aspect, a polymer electrolyte membrane is provided which comprises a polymer that comprises bound anionic functional groups, wherein the polymer electrolyte membrane additionally comprises cerium cations, and wherein the amount of cerium cations present is between 0.001 and 0.5 charge equivalents based on the molar amount of acid functional groups present in the polymer electrolyte, more typically between 0.005 and 0.2, more typically between 0.01 and 0.1, and more typically between 0.02 and 0.05.
    • 提供一种燃料电池膜电极组件,其包括聚合物电解质膜,其包含含有结合的阴离子官能团的聚合物,其中所述聚合物电解质膜另外包含铈阳离子。 在另一方面,提供一种燃料电池膜电极组件,其包括聚合物电解质膜,其包含含有结合的阴离子官能团的聚合物,其中至少一部分阴离子官能团为酸形式,并且至少部分阴离子 官能团被铈阳离子中和。 在另一方面,提供了一种聚合物电解质膜,其包含含有结合的阴离子官能团的聚合物,其中所述聚合物电解质膜另外包含铈阳离子,并且其中存在的铈阳离子的量为0.001至0.5当量,基于摩尔 存在于聚合物电解质中的酸官能团的量更多,通常在0.005至0.2之间,更典型地在0.01至0.1之间,更典型地在0.02至0.05之间。
    • 25. 发明申请
    • Crosslinked polymer
    • 交联聚合物
    • US20050131096A1
    • 2005-06-16
    • US10730238
    • 2003-12-08
    • Naiyong JingSteven Hamrock
    • Naiyong JingSteven Hamrock
    • C08J3/24C08J5/22C08G2/00
    • C08J5/225C08J3/24C08J2327/12
    • A method is provided for obtaining crosslinked polymers, particularly fluorinated polymers having pendent sulfonic acid groups, by crosslinking through pendent groups which include a sulfonyl chloride group (—SO2Cl). The sulfonyl chloride group may be removed by application of electromagnetic radiation, typically in the ultraviolet band, or a radical initiator, leaving behind a radical which readily binds covalently to other polymer strands or to crosslinking agents to form crosslinks. Typically, the polymer is made by providing a polymer comprising pendent groups which include a group according to the formula —SO2F and converting at least a portion of the —SO2F groups to —SO2Cl. After crosslinking, the remaining —SO2F groups may be converted to sulfonic acid groups, yielding a crosslinked polymer electrolyte. Such crosslinked polymer electrolytes may be used to make polymer electrolyte membranes (PEM's) that may be used in electrolytic cells such as fuel cells.
    • 提供一种用于获得交联聚合物,特别是具有侧链磺酸基的氟化聚合物的方法,通过通过包括磺酰氯基团(-SO 2 Cl)的侧基进行交联。 可以通过施加通常在紫外线带中的电磁辐射或自由基引发剂来除去磺酰氯基团,留下易于与其它聚合物链或交联剂共价结合以形成交联的基团。 通常,通过提供包含侧基的聚合物制备聚合物,所述侧基包括根据式-SO 2 F的基团,并将至少一部分-SO 2 F基团取代-SO 2 Cl。 交联后,剩余的-SO 2 F基团可以转化为磺酸基团,得到交联聚合物电解质。 这种交联聚合物电解质可用于制备可用于电解池如燃料电池的聚合物电解质膜(PEM)。