物理化学学报 >> 2007, Vol. 23 >> Issue (12): 1922-1926.doi: 10.3866/PKU.WHXB20071217

研究论文 上一篇    下一篇

一种新型锂离子电池用聚合物电解质复合膜的制备和性能表征

冯华君; 陈渊; 代克化; 宋兆爽; 马建伟; 其鲁   

  1. 北京大学化学与分子工程学院, 应用化学系, 新能源材料与技术实验室, 北京 100871; 中信国安盟固利新能源科技有限公司, 北京 102200
  • 收稿日期:2007-09-17 修回日期:2007-09-29 发布日期:2007-11-30
  • 通讯作者: 其鲁 E-mail:qilu@pku.edu.cn

Preparation and Characterization of a Novel Kind of Polymer Electrolyte Composite Membrane for Lithium-Ion Battery

FENG Hua-Jun; CHEN Yuan;DAI Ke-Hua; SONG Zhao-Shuang; MA Jian-Wei; QI Lu   

  1. New Energy Materials and Technology Laboratory, Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China; CITIC Guoan Mengguli New Energy Technology Co., Ltd., Beijing 102200, P. R. China
  • Received:2007-09-17 Revised:2007-09-29 Published:2007-11-30
  • Contact: QI Lu E-mail:qilu@pku.edu.cn

摘要: 阐述了一种新型锂离子电池用PVDF-HFP(聚偏氟乙烯-六氟丙烯聚合物树脂)基聚合物电解质复合膜的制备过程. 对复合膜中使用的无机TiO2纳米颗粒进行固体超强酸化处理, 并进行颗粒表面酸强度H0测试、XRD晶体结构分析以及复合膜的电解液吸附率测试和电化学阻抗谱测试. 采用PE无纺布支撑体作为增强材料, 以浸涂方法制备复合膜,并进一步组装为锂离子电池, 性能测试表明该电池具有良好的电化学性能.

关键词: PVDF-HFP, 聚合物电解质复合膜, 固体超强酸, 无纺布, 锂离子电池

Abstract: A novel kind of PVDF-HFP(polyvinylidene fluoride-hexafluoropro-pylene)-based polymer electrolyte composite membrane for lithium-ion battery was prepared. Inorganic TiO2 nanopowders in composite were dealt with solid super-acidization. Series of characterizations were carried on, such as surface acid strength H0, XRD analysis, electrolyte absorbency, and electrochemical impedance spectroscopy. PE non-woven fabrics were introduced as the reinforced materials, which were soaked to prepare the composite membranes, and then assembled to get the resulted lithium-ion battery. Performance tests indicated that the lithium-ion battery had good electrochemical performance.

Key words: PVDF-HFP, Polymer electrolyte composite membranes, Solid superacid, Non-woven fabrics, Lithium-ion battery

MSC2000: 

  • O646