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

Abstract

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

CLC Number:

O646

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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