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Citation: LI Zhao-Hui, SU Guang-Yao, GAO De-Shu, WANG Xia-Yu, LI Xiao-Ping. Composite Polymer Electrolyte with Micro-porous Structure[J]. Chinese Journal of Applied Chemistry, ;2004, 21(11): 1160-1164. shu

Composite Polymer Electrolyte with Micro-porous Structure

1.
a College of Chemistry, Xiangtan University, Xiangtan 411105;
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b TCL Hyperpower Batteries INC, Huizhou

Corresponding author: LI Zhao-Hui,
Received Date: 30 December 2003
Available Online: 16 April 2004
Fund Project: 湖南省科技厅资助项目(04GK3038) (04GK3038)

A kind of composite P(VDF-HFP)-based polymer films with miro-porous structure, which were filled with various amounts of Al₂O₃ nanoparticles, were prepared by a phase inversion technology. The porosity of the composite polymer films filled with 6%(mass fraction) Al₂O₃ nanoparticles is 40% higher than that of the polymer films without Al₂O₃ nanoparticles. The resulting gel polymer electrolyte possesses an ionic conductivity of 1.47×10^-3 S/cm and the ionic transference number of 0.72. The characteristics of the interface between the surface of lithium metal and the polymer electrolytes, which were filled with and without Al₂O₃ nanoparticles, were investigated by ac impedance technology.
- polymer electrolyte,
- Al₂O₃ nanoparticles,
- ionic conductivity,
- ac impedance,
- phase inversion
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