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EFFECT OF SOME FACTORS ON CONDUCTIVITIES OF POLYMER IONIC CONDUCTORS

CHEN LI-QUAN LIU JUN WANG CHAO-YING HE YUAN-KANG CHEN ZHU-SHENG LIU YONG-PING

EFFECT OF SOME FACTORS ON CONDUCTIVITIES OF POLYMER IONIC CONDUCTORS

CHEN LI-QUAN, LIU JUN, WANG CHAO-YING, HE YUAN-KANG, CHEN ZHU-SHENG, LIU YONG-PING
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  • Received Date:  28 March 1986
  • Published Online:  20 March 2005

EFFECT OF SOME FACTORS ON CONDUCTIVITIES OF POLYMER IONIC CONDUCTORS

  • 1. (1)北京大学化学系; (2)北京工业学院化学工程系; (3)中国科学院物理研究所

Abstract: The ionic conductivities of some PECH-and PECH-PEO-alkaline salt complexes have been determined. The effect of some factors such as polar group concentration, cation size and anion size as well as procedure of thin film preparation on conductivity of polymer ionic conductor has been studied. For lithium salt complex the polar group reduces the conductivity, while for sodium salt complex the polar group enhances the conductivity. This phenomenon was explained by a model involving the existence of two kinds of potential well in the polymers. It has been found that the cation size has strong influence on conductivity. For both small Li+ and large K+ , the conductivity is low but for mediun size Na+, the conductivity is high. An ion transport picture in amorphous PECH has been proposed to illustrate this behaviour. In addition, it was shown that the larger the anion size is, the lower the conductivity will be. Finally, the re-sults suggested that the procedure of thin film preparation influenced the film conductivity.

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