Advanced poly(vinyl alcohol) porous separator with overcharge protection function for lithium-ion batteries

doi:10.1007/s10008-019-04379-2

IMR OpenIR

	Advanced poly(vinyl alcohol) porous separator with overcharge protection function for lithium-ion batteries
	Zhang, Kaiyue 1,2; Xiao, Wei 1,2; Liu, Jianguo 1,2; Yan, Chuanwei 1,2
通讯作者	Xiao, Wei(wxiao@imr.ac.cn)
	2019-10-01
发表期刊	JOURNAL OF SOLID STATE ELECTROCHEMISTRY
ISSN	1432-8488
卷号	23 期号:10 页码:2853-2862
摘要	The separator plays a key role in improving the safety and charge-discharge property of lithium-ion batteries. Herein, a home-made polyvinyl alcohol porous separator with three-dimensional porous structure is used as the substrate to allow a perfect distribution of the inexpensive electroactive polymer polytriphenylamine. The electroactive polymer exhibits a reversible electrochemical reaction belonging to doping and dedoping process between 3.0 and 4.5 V, which provides potential overcharge protection function for the functionalized composite separator. Due to maximum preservation of the original porous structure of the polyvinyl alcohol separator, the composite separator likewise possesses excellent electrolyte affinity and ionic conductivity. A blocking cell assembled with the composite separator still has a certain voltage clamp function even if the current density increases to 5.0 mA cm(-2). Moreover, a half-cell (LiFePO4-Li) assembled with the composite separator exhibits a reversible voltage-regulated current shunt even after 50 overcharge cycles. At a high current density rate of 4.0 C, the half-cell can still provide a discharge capacity of 94 mAh g(-1) and an effective overcharging shunting at 4.0 V.
关键词	Lithium-ion battery Polyvinyl alcohol separator Polytriphenylamine Overcharge protection Charge-discharge performance
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Liaoning ; Shenyang Science and Technology Project
DOI	10.1007/s10008-019-04379-2
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21676282] ; Natural Science Foundation of Liaoning[20180510039] ; Shenyang Science and Technology Project[18013051]
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:000491431500010
出版者	SPRINGER
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/137042
专题	中国科学院金属研究所
通讯作者	Xiao, Wei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Kaiyue,Xiao, Wei,Liu, Jianguo,et al. Advanced poly(vinyl alcohol) porous separator with overcharge protection function for lithium-ion batteries[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2019,23(10):2853-2862.
APA	Zhang, Kaiyue,Xiao, Wei,Liu, Jianguo,&Yan, Chuanwei.(2019).Advanced poly(vinyl alcohol) porous separator with overcharge protection function for lithium-ion batteries.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,23(10),2853-2862.
MLA	Zhang, Kaiyue,et al."Advanced poly(vinyl alcohol) porous separator with overcharge protection function for lithium-ion batteries".JOURNAL OF SOLID STATE ELECTROCHEMISTRY 23.10(2019):2853-2862.