文献类型：期刊文献

英文题名：Effect of zwitterionic salt on the electrochemical properties of a solid polymer electrolyte with high temperature stability for lithium ion batteries

作者：Li, Z. H.[1];Xia, Q. L.[1];Liu, L. L.[1];Lei, G. T.[1];Xiao, Q. Z.[1];Gao, D. S.[1];Zhou, X. D.[2]

机构：[1]Xiangtan Univ, Coll Chem, Key Lab Environmentally Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Hunan, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：56

期号：2

起止页码：804

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20104713413070);WOS:【SCI-EXPANDED(收录号:WOS:000285177900025)】；

基金：Financial support from the Natural Science Fund from Hunan Province (09JJ5008), the Open Fund from State Key Laboratory of Chemical Engineering in East China University of Science and Technology (SKL-ChE-08C06), and the Doctoral Starting Fund from Xiangtan University (05QDZ18) is greatly appreciated. We also thank Ms. M.N. Liu for her help in the DSC and TG measurements.

语种：英文

外文关键词：Ionic liquid; Polymer electrolyte; Lithium ion batteries; Ionic conductivity; Zwitterionic salt

摘要：In this study, we prepare a kind of solid polymer electrolyte (SPE) based on N-ethyl-N'-methyl imidazolium tetrafluoroborate (EMIBF4), LiBF4 and poly(vinylidene difluoride-co-hexafluoropropylene) [P(VdF-HFP)] copolymer. The resultant SPE displays high thermal stability above 300 degrees C and high room temperature ionic conductivity near to 10(-3) S cm(-1). Its electrochemical properties are improved with incorporation of a zwitterionic salt 1-(1-methyl-3-imidazolium)propane-3-sulfonate (MIm3S). When the SPE contains 1.0 wt% of the MIm3S, it has a high ionic conductivity of 1.57 x 10(-3) S cm(-1) at room temperature, the maximum lithium ions transference number of 0.36 and the minimum apparent activation energy for ions transportation of 30.9 kJ mol(-1). The charge-discharge performance of a Li4Ti5O12/SPE/LiCoO2 cell indicates the potential application of the as-prepared SPE in lithium ion batteries. (C) 2010 Elsevier Ltd. All rights reserved.