文献类型：期刊文献

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

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

机构：[1] Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China; [2] College of Chemistry, Xiangtan University, Hunan 411105, China; [3] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2008

卷号：184

期号：2

起止页码：562

外文期刊名：Journal of Power Sources

收录：EI(收录号：20083611516222)

语种：英文

外文关键词：Ionic conductivity - Nanoparticles - Ions - Polyelectrolytes - Nanocomposites - Phase separation - Titanium dioxide

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 × 10-3 S cm-1 at 20 °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. ? 2008 Elsevier B.V. All rights reserved.