聚环氧乙烷复合聚合物电解质/惰性电极交流阻抗谱的研究

中国科学院大学学报 ›› 2000, Vol. 17 ›› Issue (2): 39-48.

聚环氧乙烷复合聚合物电解质/惰性电极交流阻抗谱的研究

钱新明, 古宁宇, 汪尔康, 董绍俊

中国科学院长春应用化学研究所电分析化学开放实验室长春 130023

收稿日期:2000-11-18 发布日期:2000-03-15
作者简介:钱新明,男,1964年8月生,博士后
基金资助:
国家自然科学基金 ;中国科学院知识创新工程试点资助项目 ;中国博士后科学基金;中国科学院王宽诚博士后工作奖励基金资助项目

Ac Impedance Characteristics of Composite Polymer Electrolyte Based on Poly(ethylene-oxide)(PEO)/ Blocking Electrode Interface

Qian Xinming, Gu Ningyu, Wang Erkang, Dong Shaojun

Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun130022

Received:2000-11-18 Published:2000-03-15

摘要/Abstract

摘要：

制备了PEO LiClO₄ Al₂O₃及PEO LiClO₄ 碳酸乙烯酯 (EC)两种聚环氧乙烷(PEO)复合聚合物电解质 (SPE)薄膜,用不锈钢及铂两种惰性电极研究了聚合物电解质的交流阻抗特性,并对SPE/惰性电极的界面特性进行了研究.提出了一种具有普适性的等效电路,发现电导率的测定与采用的惰性电极有关.而且交流阻抗谱图与所加交流扰动幅度无关,但与直流极化电势有关.EC含量的增加对低频直线的斜率也有影响.

关键词: 聚环氧乙烷, 复合聚合物电解质, 惰性电极, 交流阻抗

Abstract:

Two kinds of sokid composite polymer electroly tes (SPE)of (PEO₁)₁₀-LiClO₄-Al₂O₃ and (PEO₂)₁₆-LiClO₄-EC w ere prepared and Pt and cstainless steel (SS)blocking elect rodes were used to study the impedance characterist ics and the SPE/ blocking elect rode interface.It is found that the different blocking elect rode materials, the polarization potent ials applied in the experiment s, and the EC concent ration, can influence the impedance plo ts of SPE/ bolcking elect rode system.While the ac perturbation potentials have no effect on the impedance characteristics.Moreover, using the equivalent crircuit proposed the theoretical line has good correlation w ith the experiment data, which indicates that the equivalent cirui t can be commonly used fo r other SPE/ blocking sy stems

Key words: Poly (ethylene-oxide)(PEO), composi te polymer elcetroly te, blocking elect rode, impedance spect roscopy

中图分类号:

O646

钱新明, 古宁宇, 汪尔康, 董绍俊. 聚环氧乙烷复合聚合物电解质/惰性电极交流阻抗谱的研究[J]. 中国科学院大学学报, 2000, 17(2): 39-48.

Qian Xinming, Gu Ningyu, Wang Erkang, Dong Shaojun. Ac Impedance Characteristics of Composite Polymer Electrolyte Based on Poly(ethylene-oxide)(PEO)/ Blocking Electrode Interface[J]. , 2000, 17(2): 39-48.

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