Citation: XU Gu. THE CORRELATION EFFECT ON THE CHAIN MOTION CONTRIBUTION TO IONIC TRANSPORT IN POLYMER ELECTROLYTES*[J]. Chinese Journal of Polymer Science, ;1994, 12(4): 345-351. shu

THE CORRELATION EFFECT ON THE CHAIN MOTION CONTRIBUTION TO IONIC TRANSPORT IN POLYMER ELECTROLYTES*

XU Gu

Received Date: 20 September 1993

The ionic transport process in polymer electrolytes (such as polyethylene oxide) wassimulated numerically on a two dimensional square lattice where charge carriers areaccommodated by the lattice sites connected randomly with available bonds to represent theamorphous chain configuration. Following the dynamic bond percolation theory(DBPT),the chainmotion contribution to the ionic conduction was incorporated via periodical renewal of the randombond configuration. To check and extend the prediction made by DBPT employing global abrupt bond renewal,spatial correlation of the bond reassignment was introduced to the system by:1）regional bond renewal and 2) organized bond motion.It is found that the difference between the diffusivities simulated involving regional bond renewal and those of DBPT becomes negligible when the bond renewal rate approaches the carrier hopping rate.
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