全氟二异丙基膦酸锂的合成及其电化学性能研究  

Synthesis and Electrochemical Properties of Lithium Bis(heptafluoroisopropyl)tetrafluorophosphate

作　　者：郭爱红[1] 毕成良[1] 焦丽芳[2] 张宝贵[1] 

机构地区：[1]南开大学环境科学与工程学院 [2]南开大学新能源材料化学研究所,天津300071

出　　处：《高等学校化学学报》2007年第1期106-108,共3页Chemical Journal of Chinese Universities

基　　金：天津市科技攻关培育项目(批准号:05YFGPGX05600)资助

摘　　要：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.Lithium-ion secondary ing temperature and long working cell has a high energy desity term. It is a safe and clean lithium hexafluorophosphate is used as a conducting electrolyte , stable and high working voltage, wide workenergy resource without pollution. At present, lithium salt in lithium-ion secondary batteries. But lithium hexafluorophosphate as conducting electrolyte lithium salt has some disadvantages such as hydroly- sis and instability. Lithium bis （heptafluoroisopropyl） tetrafluorophosphate Li [ （ C3 F7 ） 2 PF4 ] was received by Simons process from diisopropylchlorophosphane in this paper. As an electrolyte of Li ion secondary cell, Li[ （C3FT）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.

关 键 词：Simons过程 锂离子二次电池 电解质 

分 类 号：O621[理学—有机化学]