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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (14): 1333-1337. 上一篇    下一篇

研究论文

室温离子液体增塑的纳米复合聚合物电解质研究

李朝晖1,2, 蒋晶2, 张汉平1, 吴宇平*,1   

  1. (1复旦大学化学系上海市分子催化和功能材料重点实验室 上海 200433)
    (2湘潭大学化学学院 湘潭 411105)
  • 投稿日期:2006-04-27 修回日期:2006-12-04 发布日期:2007-07-28
  • 通讯作者: 吴宇平

Study of Nanocomposite Polymer Electrolyte Plasticized by Room Temperature Ionic Liquid

LI Zhao-Hui1,2; JIANG Jing2; ZHANG Han-Ping1; WU Yu-Ping*,1   

  1. (1 Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433)
    (2 College of Chemistry, Xiangtan University, Xiangtan 411105)
  • Received:2006-04-27 Revised:2006-12-04 Published:2007-07-28
  • Contact: WU Yu-Ping

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817

被引次数

26 | 3

在室温离子液体N-乙基-N'-甲基咪唑四氟硼酸盐(EMIBF4)增塑的凝胶聚合物电解质中加入氧化铝纳米粒子, 制备了一种纳米复合聚合物电解质(nanocomposite polymer electrolyte, NCPE). 通过示差扫描量热(DSC)、X射线衍射(XRD)、热重分析(TGA)、电化学阻抗谱(EIS)等手段对其进行了表征. 结果显示, 随着氧化铝纳米粒子含量的增加, NCPE的结晶度降低, 离子导电率升高. 但是, 纳米粒子的加入量过大时反而引起NCPE的离子导电率降低. 当纳米粒子填充量为w＝10%时, NCPE具有最高的室温离子导电率1.25×10－3 S•cm－1.

关键词: 聚合物电解质, 离子液体, 纳米氧化铝, 偏氟乙烯-六氟丙烯共聚物

A new kind of nanocomposite polymer electrolyte (NCPE) was prepared by addition of alumina nanoparticles into the polymer electrolyte that was plasticized with room temperature ionic liquid, N-ethyl-N'-methylimidazolium tetrafluoroborate (EMIBF4). It was characterized by differential scanning calorimetry (DSC), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and electrochemical impedance spectroscopy (EIS). The results show that the crystallinity of NCPE decreases with increase of the number of alumina nanoparticles. Its conductivity increases with the number of the nanopartilces firstly, and then decreases with further addition of the nanoparticles. The ionic conductivity reached the maximal value of 1.25×10－3 S•cm－1 at room temperature when the mass fraction of the nanoparticles was 10%.

Key words: polymer electrolyte, ionic liquid, alumina nanoparticle, poly(vinylidenefluoride-co-hexa- fluoropropylene)