Abstract: The Polyethylene oxide(PEO)₁₆/LiClO₄ polymer electrolyte plasiticized with EC was studied using Differential Scanning Calorimetry(DSC)and impedance spectroscopy. It is found that the conductivity of the plasticized films were increased and the temperature dependence of the conductivity is Arrhenius-like. Moreover, a schematic of the electrical double layer and an equivalent circuit relative to the SS/polymer-electrolyte/SS structure were proposed.

Key words: polymer electrolyte, plasticize, ionic conductivity, impedance pectroscopy

摘要： 采用差示扫描量热法(DSC)和交流阻抗方法对EC增塑的(PEO)₁₆LiClO₄聚电解质进行了研究。结果表明(PEO)₁₆LiClO₄/EC体系的玻璃化转变温度(t_g)及PEO的结晶度(X_c)降低，电导率(б)增加，且б与温度(T)的关系符合Arrhenius行为。提出了离子导电聚电解质/不锈钢(SS)这种结构的界面双层结构和交流阻抗谱图的模拟等效电路。

关键词: 聚合物电解质, 增塑, 电导率, 交流阻抗