文献类型：期刊文献

英文题名：A foaming process to prepare porous polymer membrane for lithium ion batteries

作者：Li, Z. H.[1,2,3];Cheng, C.[3];Zhan, X. Y.[3];Wu, Y. P.[1,2];Zhou, X. D.[4]

机构：[1]Fudan Univ, Dept Chem, NEML, Shanghai 200433, Peoples R China;[2]Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China;[3]Xiangtan Univ, Coll Chem, Minist Educ, Key Lab Environmentally Friendly Chem & Applicat, Xiangtan 411105, Hunan, Peoples R China;[4]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2009

卷号：54

期号：18

起止页码：4403

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20092012085116);WOS:【SCI-EXPANDED(收录号:WOS:000266826200020)】；

基金：Financial support from National Basic Research Program of China (973 Program No: 2007CB209702), Natural Science Fund from Hunan Science Technology Department (08JJ), 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 acknowledged. We also thank Ms. M.N. Liu for her help in the DSC measurements.

语种：英文

外文关键词：Porous polymer membrane; Urea; Foaming agent; Gelled polymer electrolyte; Rechargeable lithium battery

摘要：A foaming process Was used to prepare porous polymer membranes (PPMs) based on poly(vinylidene diflouride-co-hexafluoropropylene) copolymer for lithium ion batteries. In this simple process, urea, the foaming agent, was decomposed into gases and was removed at an elevated temperature to get the porous structure within the polymer matrix. When the weight ratio of urea to P(VDF-HFP) is 5:6, the PPM presents the highest porosity, 70.2%, and the prepared gelled polymer electrolyte shows an ionic conductivity up to 1.43 x 10(-3) S cm(-1) at room temperature. This provides another way to prepare gelled polymer electrolytes easily for application in rechargeable lithium batteries. (C) 2009 Elsevier Ltd. All rights reserved.