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首次采用新型有机硅聚合物——侧链含一半硅氢键的羟基封端聚二硅氧烷(PSEMH)与聚氧乙烯醚(PEO)作为基质,通过溶液浇铸法制备了PEO-PSEMH-LiClO4全固态共混聚合物电解质膜.交流阻抗谱实验测定结果表明PSEMH与PEO共混作为聚合物电解质的基质可以显著提高共混聚合物电解质的离子电导率.PSEMH含量为25%,O/Li+为12∶1时,共混聚合物电解质具有最大离子电导率2.7×10-5S·cm-1(28℃).PSEMH的引入一方面可以显著地抑制PEO的结晶性能,另一方面PSEMH分子链节中的二硅醚氧原子与Li+间具有配位作用,且参与了共混聚合物电解质锂离子迁移运动.
For the first time, PEO-PSEMH-LiClO4 (PEO-PSEMH-LiClO4) was prepared by solution casting using a novel silicone polymer-PSEMH and polyoxyethylene ether (PEO) All-solid hybrid polymer electrolyte membrane.Experimental results of AC impedance spectroscopy showed that PSEMH blended with PEO as the matrix of polymer electrolyte can significantly improve the ionic conductivity of the polymer electrolyte.PSEMH content is 25%, O / Li + is 12: 1, the polymer electrolyte has the maximum ionic conductivity of 2.7 × 10-5S · cm-1 (28 ℃) .PSEMH introduction can significantly inhibit the crystallization of PEO on the one hand, on the other hand PSEMH molecular chain The disilicide oxygen atom has a coordination function with Li + and participates in the lithium ion mobility of the polymer electrolyte.