高等学校化学学报

高等学校化学学报

• 研究简报 • 上一篇    下一篇

全氟二异丙基膦酸锂的合成及其电化学性能研究

郭爱红1,2, 毕成良1, 焦丽芳3, 张宝贵1   

    1. 南开大学环境科学与工程学院, 天津 300071;
    2. 河北理工大学资源与环境学院, 唐山 063009;
    3. 南开大学新能源材料化学研究所, 天津 300071
  • 收稿日期:2005-12-19 修回日期:1900-01-01 出版日期:2007-01-10 发布日期:2007-01-10
  • 通讯作者: 张宝贵

Synthesis and Electrochemical Properties of Lithium Bis(heptafluoroisopropyl)tetrafluorophosphate

GUO Ai-Hong1,2, BI Cheng-Liang1,3, JIAO Li-Fang3, ZHANG Bao-Gui1   

    1. College of Environmental Science and Engineering,
    2. College of Resource and Environment, Hebei Polytechnic University, Tangshan 063009, China;
    3. Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China
  • Received:2005-12-19 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10
  • Contact: ZHANG Bao-Gui

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摘要： 以合成的氯代二异丙基膦为原料, 利用电化学全氟化方法, 得到全氟二异丙基膦酸锂(Li[(C3F7)2PF4]), 并对其物理和电化学性能进行了研究.

关键词: Simons过程, 锂离子二次电池, 电解质

Abstract: Lithium-ion secondary cell has a high energy desity, stable and high working voltage, wide working temperature and long working term. It is a safe and clean energy resource without pollution. At present, lithium hexafluorophosphate is used as a conducting electrolyte lithium salt in lithium-ion secondary batteries. But lithium hexafluorophosphate as conducting electrolyte lithium salt has some disadvantages such as hydrolysis and instability. Lithium bis(heptafluoroisopropyl) tetrafluorophosphate Li[(C3F7)2PF4] was received by Simons process from diisopropylchlorophosphane in this paper. As an electrolyte of Li ion secondary cell, Li[(C3F7)2PF4] had lower vapor pressure than LiPF6 in the solvent at the same temperature, comparable conductivity and oxidation stability in the same concentration at room temperature. It was worth mentioning that Li[(C3F7)2PF4] has an excellent stability towards hydrolysis. The synthesis process is safe and easily controlled.

Key words: Simons process, Lithium ion secondary cell, Electrolyte

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