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

doi:10.1007/s10008-019-04379-2

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	JOURNAL OF SOLID STATE ELECTROCHEMISTRY
	2019-10-01
卷号	23 期号:10 页码:2853-2862
关键词	Lithium-ion battery Polyvinyl alcohol separator Polytriphenylamine Overcharge protection Charge-discharge performance
ISSN号	1432-8488
DOI	10.1007/s10008-019-04379-2
通讯作者	Xiao, Wei(wxiao@imr.ac.cn)
英文摘要	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.
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
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000491431500010
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Liaoning ; Shenyang Science and Technology Project
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137041]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xiao, Wei
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, 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.