Composite Micro-porous Polymer Electrolyte of PVDF-HFP Modified by MCM-48

Authors

Wei-feng WU, Department of Chemistry,Zhengzhou University,Zhengzhou 450001,China;
Chang-chun YANG, Department of Chemistry,Zhengzhou University,Zhengzhou 450001,China;
Su-jiao HE, Department of Chemistry,Zhengzhou University,Zhengzhou 450001,China;
Bing-bing ZHANG, Department of Chemistry,Zhengzhou University,Zhengzhou 450001,China;
Song XU, Department of Chemistry,Zhengzhou University,Zhengzhou 450001,China;

Abstract

The composite micro-porous polymer electrolyte (CMPE) of PVDF-HFP modified by meso-porous molecular sieves of MCM-48 was prepared by phase-inversion process. The ionic conductivity and Li+ transference number of the polymer electrolyte were raised,respectively,by 97%(from 0.89 mS/cm to 1.75 mS/cm) and 39%(from 0.57 to 0.79),when 4%(by mass) MCM-48 was added in. Meanwhile,the crystallinity and electrochemical stability of the polymer electrolyte had not been changed by the addition of MCM-48. The charge-discharge efficiency of the button cell assembled with the composite membrane (Li/4%MCM-48-CMPE/LiFePO4) was 91% in the first cycle,and no loss of capacity was found even after 30 cycles. The discharge capacity at 1C rate was 80% of that at 0.1C rate.

Keywords

PVDF-HFP, MCM-48, composite micro-porous polymer electrolyte

DOI Link

https://doi.org/10.61558/2993-074X.2002

Publication Date

2009-08-28

Online Available Date

2009-08-28

Revised Date

2009-08-28

Received Date

2009-08-28

Recommended Citation

Wei-feng WU, Chang-chun YANG, Su-jiao HE, Bing-bing ZHANG, Song XU. Composite Micro-porous Polymer Electrolyte of PVDF-HFP Modified by MCM-48[J]. Journal of Electrochemistry, 2009 , 15(3): 315-319.
DOI: 10.61558/2993-074X.2002
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss3/16