Enhanced ionic conductivity and electrochemical capacity of lithium ion battery based on PVDF-HFP/HDPE membrane

被引：43

作者：

He, Junying ^{[1
]}

Liu, Jiuqing ^{[1
]}

Li, Jie ^{[1
]}

Lai, Yanqing ^{[1
]}

Wu, Xiufeng ^{[1
]}

机构：

[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China

来源：

MATERIALS LETTERS | 2016年 / 170卷

基金：

中国国家自然科学基金;

关键词：

Electrical properties; Polymers; Membrane; PVDF-HFP; HDPE; Lithium-ion battery; SEPARATORS; COMPOSITE; PERFORMANCE;

D O I：

10.1016/j.matlet.2016.02.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Poly(vinylidene fluoride-co-hexafluoropropylene)/high density polyethylene (PVDF-HFP/HDPE) membrane with enhanced ionic conductivity and electrochemical capacity for lithium ion battery application has been successfully prepared by non-solvent induced phase separation (NIPS) technique. HDPE particles with size smaller than 250 nm is achieved via optimized inverse emulsion polymerization method. Results indicate that the novel PVDF-HFP/HDPE membrane has ion conductivity of 2.97 mS cm(-1) at 25 degrees C, higher than that 1.92 mS cm(-1) of pristine PVDF-HFP membrane. Additionally, the LiCoO2/Li cells assembled with PVDF-HFP/HDPE membrane show good C-rate and cycling performance which is parallel to the commercial PP membrane. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：126 / 129

页数：4

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