高等学校化学学报2017，Vol.38Issue(6)：1018-1024,7.DOI:10.7503/cjcu20160838
基于静电纺丝和静电喷射技术的P(VDF-HFP)/Al2O3/P(VDF-HFP)复合隔膜的制备与电化学性能分析
Preparation and Electrochemical Characterization of P(VDF-HFP)/Al2O3/P(VDF-HFP) Membranes for LIBs by Electrospinning and Electrospraying
摘要
Abstract
A novel sandwiched composite membrane(SCM) was prepared by depositing alumina micro-particles between two layers of electrospun poly(vinylidene fluoride-co-hexafluor-opropylene)[P(VDF-HFP)] nanofibers through electrostatic spray deposition.The morphologies, thermal shrinkage, tensile properties and electrochemical properties of the separator and battery performance for cells made with the SCM were investigated.The results show a higher uptake of electrolyte for the SCM than the pure P(VDF-HFP) membrane(PHM).SCM can easily absorb the electrolyte to form gel polymer electrolytes(GPEs).The tensile strength of the SCM membrane is about 4.00 MPa when the elongation at break is 261.57%.The ionic conductivity of SCM GPEs is 1.61×10-3 S/cm at room temperature and GPE shows a high electrochemical stability potential of 5.4 V.With LiCoCO2 as the cathode, the cell with SCM GPEs exhibits a high initial discharge capacity of 145 mA·h·g-1.关键词
锂离子电池/凝胶聚合物电解质/静电纺丝/静电雾化沉积Key words
Lithium ion battery(LIB)/Gel polymer electrolyte(GPE)/Electrospin/Electrostatic spray deposition分类
化学化工引用本文复制引用
周锦涛,焦晓宁,于宾,任元林,康卫民..基于静电纺丝和静电喷射技术的P(VDF-HFP)/Al2O3/P(VDF-HFP)复合隔膜的制备与电化学性能分析[J].高等学校化学学报,2017,38(6):1018-1024,7.基金项目
天津市科技计划项目(批准号: 13JCZDJC32500, 14TXGCCX00014)资助 （批准号: 13JCZDJC32500, 14TXGCCX00014）
This paper is supported by the Project of Tianjin Science and Technology Plan, China(Nos.13JCZDJC32500, 14TXGCCX00014). （Nos.13JCZDJC32500, 14TXGCCX00014）
