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研究了由交联聚醚-锂盐-极性有机化合物三元组分组成的固体高分子凝胶电解质的组成结构对其离子导电性能的影响,结果表明,极性有机化合物在三元组分体系中同时起到了增塑作用和升高体系介电常数的作用,这两种作用都有利于提高这种体系的离子导电性能。固体高分子凝胶电解质中所含的有机化合物组分的粘度愈低,或介电常数愈高,它的离子电导率愈高。与具有相同结构高分子基体的高分子固体电解质比较,固体高分子凝胶电解质的离子电导率可高出2~3个数量级以上。
The effect of the composition of the solid polymer gel electrolyte composed of the ternary component of the cross-linked polyether-lithium salt-polar organic compound on the ionic conductivity was investigated. The results showed that the polar organic compounds exhibited good ionic conductivity in the ternary component System at the same time played a role in plasticizing and increasing the dielectric constant of the system, both of which are conducive to improving the ionic conductivity of this system. The lower the viscosity of the organic compound component contained in the solid polymer gel electrolyte, or the higher the dielectric constant, the higher its ionic conductivity. Compared with polymer solid electrolyte with the same structure of polymer matrix, solid polymer gel electrolyte ion conductivity can be higher than 2 to 3 orders of magnitude.