Evaluation of the main processing parameters influencing the performance of poly(vinylidene fluoride–trifluoroethylene) lithium-ion battery separators

被引：0
作者：
C. M. Costa
V. Sencadas
J. G. Rocha
M. M. Silva
S. Lanceros-Méndez
机构：
[1] Universidade do Minho,Centro/Departamento de Física
[2] Campus do IPCA,Instituto Politécnico do Cávado e do Ave
[3] Universidade do Minho,Centro Algoritmi
[4] Universidade do Minho,Centro/Departamento de Química
[5] INL—International Iberian Nanotechnology Laboratory,undefined
来源：
Journal of Solid State Electrochemistry | 2013年 / 17卷
关键词：
P(VDF-TrFE) separators; Porous membranes; Lithium-ion batteries;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Poly(vinylidene fluoride–trifluoroethylene) (PVDF–TrFE) membranes are evaluated for lithium-ion battery separator applications. Some of the main parameters affecting separator performance such as porosity, dehydration of lithium ions, and processing technique (Li-ion uptake versus composite formation) are investigated. The polymer characteristics, as determined by infrared spectroscopy, do not change as a function of porosity, dehydration of lithium ions in the electrolyte solution, or processing technique. The electrochemical impedance spectroscopy represented through the Nyquist plot, Bode plot, and the ionic conductivity as a function of temperature strongly depends on the aforementioned parameters. The membrane that exhibits the highest ionic conductivity is a porous membrane without dehydration of lithium ions and prepared by the uptake technique. The performance of the membrane for battery applications are, therefore, strongly influenced both by porosity and processing technique.
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页码：861 / 870
页数：9
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