Electrochemical studies on poly(vinylidene fluoride-hexafluoropropylene) membranes prepared by phase inversion method

被引：43

作者：

Hwang, Ju ^{[1
]}

Jeong, Soo Kyung ^{[1
]}

Nahm, Kee Suk ^{[1
]}

Stephan, A. Manuel ^{[1
]}

机构：

[1] Chonbuk Natl Univ, Sch Chem Engn & Technol, Chonju 561756, South Korea

来源：

EUROPEAN POLYMER JOURNAL | 2007年 / 43卷 / 01期

关键词：

lithium battery; polymer electrolyte; phase inversion; morphology; discharge capacity;

D O I：

10.1016/j.eurpolymj.2006.10.020

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The copolymer membranes, poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) were prepared by phase inversion method using poly(ethylene glycol) (PEG) as an additive with acetone or dimethyl formamide as solvent. The morphology of the membranes has been greatly varied with the composition of the polymer and solvent. The ionic conductivity of the membranes were measured at various temperatures (-30 to 50 degrees C). The prepared membranes have been employed as separators in LiCoO2/Li cells and were subjected to charge-discharge studies at 0.2 C-rate. The polymer membrane prepared with a ratio of PVdF-HFP (50):PEG (50) using dimethyl formamide as solvent delivered higher discharge capacity than the membranes prepared with acetone as solvent. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：65 / 71

页数：7

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