申请人:CORNELL UNIVERSITY
公开号:US20160276706A1
公开(公告)日:2016-09-22
A polymer electrolyte composition includes a hard polymer segment covalently bound to an ionically-conducting segment, and a salt that includes an element M selected from an alkali metal, an alkaline earth metal, zinc, and aluminum. The hard polymer segment has a glass transition temperature (T
g
) greater than or equal to 110° C., or a melting temperature (T
m
) greater than 110° C. The ionically-conducting segment has a molecular weight of 800 to 10,000 g/mol. The polymer electrolyte composition has an ionic conductivity for an M ion greater than or equal to 1×10
−8
S/cm at 25° C. Methods for the preparation of the polymer electrolyte composition are also provided, as are articles (e.g., electrochemical cells and energy storage devices) that contain the polymer electrolyte composition.
一种聚合物电解质组合物包括一个硬聚合物段共价地结合到一个离子导电段,以及一种含有从碱金属、碱土金属、锌和铝中选择的元素M的盐。硬聚合物段的玻璃转变温度(Tg)大于或等于110℃或熔点(Tm)大于110℃。离子导电段的分子量为800至10,000克/摩尔。该聚合物电解质组合物在25℃时对M离子的离子电导率大于或等于1×10−8S/cm。还提供了制备聚合物电解质组合物的方法,以及包含聚合物电解质组合物的文章(例如,电化学电池和储能装置)。