文献类型：会议论文

英文题名：Macroporous nanocomposite polymer electrolyte for lithium-ion batteries

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

机构：[1]Fudan Univ, Dept Chem, 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, Hunan 411105, Peoples R China;[4]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

会议论文集：Meeting of the International-Battery-Material-Association

会议日期：NOV 16-20, 2007

会议地点：Shenzhen, PEOPLES R CHINA

语种：英文

外文关键词：Nanocomposite polymer electrolyte; P(VDF-HFP); Macroporous polymer membrane; Ionic conductivity; Lithium-ion battery

摘要：A novel macroporous nanocomposite polymer membrane (NCPM) based on poly(vinylidene difluoride-co-hexafluoropropylene) [P(VDF-HFP)] copolymer was prepared by in situ hydrolysis of Ti(OC4H9)(4) using a non-solvent-induced phase separation technique. SEM micrograph shows that the yielding TiO2 nanoparticles are dispersed uniformly in the polymer matrix and there are a lot of spherical macropores connecting with each other by some smaller pores. DSC results exhibit that the crystallinity of polymer matrix decreases with the incorporation of TiO2 nanoparticles. The tensile stress of the NCPM is 9.69 MPa and its fracture strain 74.4%. After immersion in 1.0 mol l(-1) LiPF6/ethyl carbonate (EC)-dimethyl carbonate (DMC), the ionic conductivity of the obtained nanocomposite polymer electrolyte (NCPE) is 0.98 x 10(-3) S cm(-1) at 20 degrees C. Lithium-ion batteries, which use this kind of NCPE as the separator and electrolyte, display good discharging performance at different current densities, presenting promise for its practical application. (C) 2008 Elsevier B.V. All rights reserved.