Preparation and Characterization of MCM-41/ PVdF-HFP Composite Microporous Polymer Electrolytes for Li-ion Batteries

Authors

Zuo-feng CHEN, 1), JIANG Yan-xia~(*1), ZHUANG Quan-chao~(1), DONG Quan-feng~(1, 2), SUN Shi-gang~(1)(1. State Key Lab for Physical Chemistry of Solid Surfaces, Department of Chemistry Xiamen University, Xiamen 361005, China,2. Xiamen University Powerlong Battery Research Institute, Xiamen 361005, China;

Abstract

MCM-41/vinylidine fluoride-hexafluropropene copolymer (PVdF-HFP) composite microporous polymer electrolytes were prepared with mixed solvent of N, N-Dimethylformamide (DMF) and acetone. The influence of MCM-41 and nano-SiO_(2) on the porous structure of the microporous polymer electrolytes were studied with SEM. The results show that MCM-41 could take the place of the plasticizer in the process of making pores, and bring the preparation of microporous membranes easily. The preliminary electrochemical tests showed that the ion conductivity of composite microporous polymer electrolyte with 10% MCM-41 was about 10~(-3) S cm~(-1), and the performance of batteries was improved. The mesoporous MCM-41selected in the paper possesses the framework unit of SiO_(2), that is widely used as inorganic filler in polymer electrolyte. In addition, it possesses the particular channels arranged in hexagonal array and a large surface interstice as stacking, that could lead to the formation and connectivity of micropores, finally a higher ion conductivity. These properties make MCM-41 the favorable and promising inorganic filler in polymer electrolyte.

Keywords

Li-ion batteries, PVdF-HFP, Mesoporous MCM-41, Polymer electrolyte membranes

DOI Link

https://doi.org/10.61558/2993-074X.1633

Publication Date

2005-05-28

Online Available Date

2005-05-28

Revised Date

2005-05-28

Received Date

2005-05-28

Recommended Citation

Zuo-feng CHEN. Preparation and Characterization of MCM-41/ PVdF-HFP Composite Microporous Polymer Electrolytes for Li-ion Batteries[J]. Journal of Electrochemistry, 2005 , 11(2): 162-166.
DOI: 10.61558/2993-074X.1633
Available at: https://jelectrochem.xmu.edu.cn/journal/vol11/iss2/9

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