NIMTE OpenIR  > 2018专题
Enhancement of electrochemical performance of lithium-ion battery by single-ion conducting polymer addition in ceramic-coated separator
Li, Dan; Qin, Dejun; Nie, Feng; Wen, Lele; Xue, Lixin
2018
Source PublicationJOURNAL OF MATERIALS SCIENCE
Volume53Issue:15Pages:11038-11049
AbstractSingle-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.
KeywordComposite Electrolytes Membrane Deposition Stability Nonwoven Binder
Subject AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/17294
Collection2018专题
Recommended Citation
GB/T 7714
Li, Dan,Qin, Dejun,Nie, Feng,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 Li, Dan,Qin, Dejun,Nie, Feng,Wen, Lele,&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 Li, Dan,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.
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