高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (5): 922.

• 研究论文 • 上一篇    下一篇

以水作相分离造孔剂制备P(VDF-HFP)/PMMA聚合物电解质膜

赵毅, 王涛, 徐帆, 江志裕   

  1. 复旦大学化学系, 上海分子催化和功能材料重点实验室, 上海 200433
  • 收稿日期:2003-03-26 出版日期:2004-05-24 发布日期:2004-05-24
  • 通讯作者: 江志裕(1940年出生),男,教授,博士生导师,从事高能化学电源和表面电化学研究.E-mail:zyjiang@fudan.ac.cn E-mail:zyjiang@fudan.ac.cn
  • 基金资助:

    国家自然科学基金(批准号:20333040)资助

Preparation of P(VDF-HFP)/PMMA Blend Polymer Electrolyte Membrane with Water as Material for Phase Separation and Pore Producer

ZHAO Yi, WANG Tao, XU Fan, JIANG Zhi-Yu   

  1. Department of Chemistry, Fudan University, Shanghai 200433, China
  • Received:2003-03-26 Online:2004-05-24 Published:2004-05-24

PDF (PC)

被引次数

25

摘要： 介绍了一种以水代替常用的有机物质作为相分离造孔剂制备混合型聚合物电解质的新方法.所研究的混合型聚合物为聚(偏二氟乙烯-六氟丙烯)和聚甲基丙烯酸甲酯的混合物.扫描电镜SEM图表明这种混合型聚合物膜具有蜂窝状结构,有利于膜电导率的增加.利用FTIR,XRD和DSC等方法研究了混合型聚合物电解质中两种聚合物间的相互作用.用电化学交流阻抗方法测得在30℃下P(VDF-HFP)/PMMA摩尔比为1:1的混合型聚合物电解质的离子电导率为0.804×10-3S/cm.对照其它方法,本方法具有制备容易、成本较低和有利于环境保护等优点.

关键词: 锂离子电池, 聚合物电解质, P(VDF-HFP), PMMA

Abstract: A new method is proposed to prepare blend polymer electrolyte by using water as the material for phase separation and pore producer instead of traditional organic material. The blend polymer electrolyte consisting of polyvinylidene fluoride-co-hexafluoropropylene P(VDF-HFP) and poly(methyl methacrylate) (PMMA) was prepared by this method. The SEM images show that the blend polymer electrolyte films have alveolate network structures, which benefit the increase of ionic conductivity. The interaction between two kinds of polymers within the blend polymer was confirmed by FTIR, XRD and DSC studies. The ionic conductivity for the blend polymer electrolyte film with m(VDF-HFP)∶ m(PMMA)=1∶1 was measured as 0.804×10-3S/cm at 30 ℃ by using electrochemical impedance method. Compared with other approaches the method introduced here is a very easy, cost-saving, and more environmental friendly method.

Key words: Li ion batteries, Polymer electrolytes, P(VDF-HFP), PMMA

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