相位反转
微型多孔材料
材料科学
电解质
膜
离子电导率
复合数
溶解
分析化学(期刊)
化学工程
化学
复合材料
色谱法
物理化学
电极
生物化学
工程类
作者
G. Vijayakumar,S. Karthick,Subramania Angaiah
摘要
Composite microporous membranes based on Poly (vinylidene fluoride– co -hexafluoro propylene) P(VdF- co -HFP)-CeO 2 were prepared by phase inversion and preferential polymer dissolution process. It was then immersed in 1M LiClO 4 -EC/DMC (v/v=1:1) electrolyte solution to obtain their corresponding composite microporous membrane electrolytes. For comparison, composite membrane electrolytes were also prepared by conventional phase inversion method. The surface morphology of composite membranes obtained by both methods was examined by FE-SEM analysis, and their thermal behaviour was investigated by DSC analysis. It was observed that the preferential polymer dissolution composite membrane electrolytes (PDCMEs) had better properties, such as higher porosity, electrolyte uptake (216 wt%), ionic conductivity (3.84 mS⋅cm −1 ) and good electrochemical stability (4.9 V), than the phase inversion composite membrane electrolytes (PICMEs). As a result, a cell fabricated with PDCME in between mesocarbon microbead (MCMB) anode and LiCoO 2 cathode had better cycling performance than a cell fabricated with PICME.
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