Study on the Ionic Conductivity of Comb Polymer Electrolytes

Authors

Liming Ding, Dalian Institute of Chemical Physics,Chinese A cadamy of Sciences,Dalian 116012;

Abstract

A comb polymer(CP350)with oligo-oxyethylene side chains was prepared from methyl vinyl ether/maleic anhydride copolymer.The ionic conductivity of CP350/LiAsF6 and CP350/LiPF6 complexes was studied as a function of temperature and[Li]/[EO]ratios.A equivalent circuit was given to interpret complex impedance spectra. At 25℃,the ionic conductivity maxima of the two systems are 1.38×10(-4),8.32×10(-5)S/cm respectively. The appearance of the conductivity maxima has been interpreted as being due to the effect of microviscosity on ion transport. lonic conduction displays non-Arrhenius behaviour.The temperature dependence of ionic conductivity was attributed mainly to the temperature dependence of charge carrier hopping,ion pairing and micro Brown motion of side chains.The larger the(rc+ra)value the salt has,the higher the conductivity of the electrolyte film is.

Keywords

Solid polymer electrolyte, Complex impedance spectra, Ionic conductivity, lon radius

DOI Link

https://doi.org/10.61558/2993-074X.1339

Publication Date

1996-08-28

Online Available Date

1996-08-28

Revised Date

1996-08-28

Received Date

1996-08-28

Recommended Citation

Liming Ding. Study on the Ionic Conductivity of Comb Polymer Electrolytes[J]. Journal of Electrochemistry, 1996 , 2(3): 299-304.
DOI: 10.61558/2993-074X.1339
Available at: https://jelectrochem.xmu.edu.cn/journal/vol2/iss3/10