Enhancement of electrochemical performance of lithium-ion battery by single-ion conducting polymer addition in ceramic-coated separator

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2018专题

	Enhancement of electrochemical performance of lithium-ion battery by single-ion conducting polymer addition in ceramic-coated separator
	Wen, Lele; Li, Dan; Qin, Dejun; Nie, Feng; Xue, Lixin
刊名	JOURNAL OF MATERIALS SCIENCE
	2018
卷号	53 期号:15 页码:11038-11049
关键词	Composite Electrolytes Membrane Deposition Stability Nonwoven Binder
英文摘要	Single-ion conducting polymers have been widely reported in the literature as solid polymer electrolytes, but their low ionic conductivity has limited industrial applications at ambient temperature. Here, we employed a perfluoroalkyl sulfonamide-based single-ion conducting polymer-lithiated poly(perfluoroalkylsulfonyl)imide (LiPFSI) to promote the migration of free Li-ions and diminish cell polarization in lithium-ion batteries. After blending with Al2O3 powder, the LiPFSI/Al2O3 composite was coated on a commercial polyethylene separator. Adding the high surface energy of Al2O3 particles and the exceptional ionic conductivity of LiPFSI resulted in a LiPFSI/Al2O3 composite-coated separator with excellent wettability and low impedance. A LiFePO4/Li half-cell with this separator showed a highly improved charge-discharge cyclability up to 130 mAh/g that maintained 98% retention of the original reversible capacity after 220 charge-discharge cycles at a high current rate of 2 C (1 C = 170 mAh/g). Even at a high rate of 5 C, the cell capacity could be maintained above 100 mAh/g. Herein, we present a simple and effective method to optimize the separator with the LiPFSI/Al2O3 composite and thus improve the high rate charge-discharge performance of Li-ion batteries.
学科主题	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17294]
专题	2018专题
推荐引用方式 GB/T 7714	Wen, Lele,Li, Dan,Qin, Dejun,et al. Enhancement of electrochemical performance of lithium-ion battery by single-ion conducting polymer addition in ceramic-coated separator[J]. JOURNAL OF MATERIALS SCIENCE,2018,53(15):11038-11049.
APA	Wen, Lele,Li, Dan,Qin, Dejun,Nie, Feng,&Xue, Lixin.(2018).Enhancement of electrochemical performance of lithium-ion battery by single-ion conducting polymer addition in ceramic-coated separator.JOURNAL OF MATERIALS SCIENCE,53(15),11038-11049.
MLA	Wen, Lele,et al."Enhancement of electrochemical performance of lithium-ion battery by single-ion conducting polymer addition in ceramic-coated separator".JOURNAL OF MATERIALS SCIENCE 53.15(2018):11038-11049.