A Polyborate Coated Cellulose Composite Separator for High Performance Lithium Ion Batteries

被引：33

作者：

Ding, Guoliang ^{[1
]}

Qin, Bingsheng ^{[1
]}

Liu, Zhihong ^{[1
]}

Zhang, Jianjun ^{[1
]}

Zhang, Bo ^{[1
]}

Hu, Pu ^{[1
]}

Zhang, Chuanjian ^{[1
]}

Xu, Gaojie ^{[1
]}

Yao, Jianhua ^{[1
]}

Cui, Guanglei ^{[1
]}

机构：

[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao Ind Energy Storage Technol Inst, Qingdao 266101, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2015年 / 162卷 / 06期

基金：

中国国家自然科学基金;

关键词：

POLYMER ELECTROLYTE; ENERGY-STORAGE; CHALLENGES; NONWOVEN; ACID;

D O I：

10.1149/2.0261506jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this paper, a single ion polymer electrolyte enhanced cellulose nonwoven separator has been successfully explored via a dip-coating process for high-performance lithium ion battery. The single ion polymer electrolyte was comprised of polymeric lithium tartaric acid borate salt (PLTB) and polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP). This single ion polymer electrolyte enhanced cellulose composite separator exhibited higher ionic conductivity, good flame retardancy and superior thermal resistance compared to the commercial polypropylene (PP) separator. Moreover, the composite separator at room temperature possessed lithium ion transference number (t(Li)(+)) of 0.48, which was higher than that using the pristine cellulose nonwoven (0.31). Furthermore, it was demonstrated that the lithium cobalt oxide (LiCoO2)/graphite cell with the composite separator delivered superior rate capability and better cycling performance than those with PP separator. These fascinating characteristics would endow this composite nonwoven a promising separator for high-performance lithium ion battery. (C) 2015 The Electrochemical Society. All rights reserved.

引用

页码：A834 / A838

页数：5

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