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US07879971B2 Multiblock copolymer, method of preparing the same, polymer electrolyte membrane prepared from the multiblock copolymer, method of preparing the polymer electrolyte membrane, and fuel cell employing the polymer electrolyte membrane 有权
多嵌段共聚物，其制备方法，由多嵌段共聚物制备的聚合物电解质膜，制备聚合物电解质膜的方法和使用聚合物电解质膜的燃料电池

Multiblock copolymer, method of preparing the same, polymer electrolyte membrane prepared from the multiblock copolymer, method of preparing the polymer electrolyte membrane, and fuel cell employing the polymer electrolyte membrane
Abstract:
A multiblock copolymer includes a polysulfone repeating unit, a sulfonated polysulfone repeating unit, a polydialkylsiloxane repeating unit and an ethylenic unsaturated group at a terminal of the multiblock copolymer. Also provided are a method of preparing the multiblock copolymer, a polymer electrolyte membrane prepared from the multiblock copolymer, a method of preparing the polymer electrolyte membrane, and a fuel cell including the polymer electrolyte membrane. The polymer electrolyte membrane that has a high ionic conductivity and good mechanical properties and minimizes crossover of methanol can be manufactured at low cost. In addition, the structure of the multiblock copolymer can be varied to increase selectivity to a solvent used in a polymer electrolyte membrane.
Abstract(Chinese):

多嵌段共聚物在多嵌段共聚物的末端包括聚砜重复单元，磺化聚砜重复单元，聚二烷基硅氧烷重复单元和烯属不饱和基团。 还提供了制备多嵌段共聚物的方法，由多嵌段共聚物制备的聚合物电解质膜，制备聚合物电解质膜的方法和包含聚合物电解质膜的燃料电池。 可以以低成本制造具有高离子导电性和良好机械性能并最小化甲醇交换的聚合物电解质膜。 此外，可以改变多嵌段共聚物的结构，以增加对在聚合物电解质膜中使用的溶剂的选择性。

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