Welcome to visit The Chinese Journal of Process Engineering, Today is
Reviews

Preparation process of high-quality LiPF6 crystals

  • Yongfeng ZHAO Haitao ZHANG
Expand
  • 1. Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China 2. College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100864, China

Received date: 2017-12-15

  Revised date: 2018-03-29

  Online published: 2018-12-19

Supported by

National Key R&D Program of China

Abstract

Much more attentions are being devoted to high performance energy storage and conversion devices to conquer global warming issue and energy crisis. Lithium-ion battery, the most promsing device, is composed of anode, cathode, separator and electrolyte. Note should be highlighted that the performance of battery is determinded by electrolyte, espcially the safety issue. The demand of lithium-ion batteries and their electrolytes is growing rapidly with the rapid development of new energy vehicles recently. Lithium hexafluorophosphate (LiPF6) crystal is a white crystal with trigonal crystallographic structure. It is the key electrolyte material for Li-ion batteries. LiPF6 is combustible, corrosive and of poor thermal stability. Therefore, some toxic and corrosive precursors are employed, and their synthesis is required to be conducted within an anhydrous and anaerobic environment. Furthermore, many high temperature and low temperature treatments are involved in the synthetic procedure. Therefore, it is a huge challenge to produce high-purity LiPF6 crystals with an electronic grade in an industrial-scale. Fortunately, some industrial processes have been developed successfully by domestic enterprises even there is still some room for improving them. Here, the synthetic methods of LiPF6 and the domestic large-scale production processes are reviewed with the hope of providing some knowledge for future upgrade of the industrialized LiPF6 processes and a guideline for developing new synthetic routes. This review will concentrate on the development and intrinsic correlation among market demand of lithium-ion battery, role of electrolyte in lithium-ion battery, LiPF6 industrialized production procedures, and planned incremental capacity. In addition, the perspectives of potential electrolyte are summarized on basis of the progress of high-capacity and high-voltage electrode materials. There is no doubt that the future emphasis should be paid to the optimization of process, true demand of market, novel lithium salt, fluoridized solvents, and green techniques.

Cite this article

Yongfeng ZHAO Haitao ZHANG . Preparation process of high-quality LiPF6 crystals[J]. The Chinese Journal of Process Engineering, 2018 , 18(6) : 1160 -1166 . DOI: 10.12034/j.issn.1009-606X.217428

References

[1] 节能与新能源汽车技术路线图战略咨询委员会, 中国汽车工程学会.节能与新能源汽车技术路线图. [J].机械工业出版社., 2016, /(/):/-/
[2]肖铭.六氟磷酸锂合成技术的研究进展[J].精细与专用化学品, 2016, 24(07):17-20
[3] 郑洪河等著.锂离子电池电解质. 化学工业出版社[J]./, 2006, /(/):/-/
[4] Jow TR, Xu K, Borodin MU.Electrolytes for Lithium and Lithium-Ion Batteries.[J].the Modern Aspects of Electrochemistry series, Springer ., 2014, 58(/):/-/
[5] Dudney N J, West WC, Nanda J, .World Scientific.[J].Handbook of Solid State Batteries (2nd Edition), 2015 , /(/):/-/
[6] Xiao L F,Cao Y L,Ai X P.Optimization of EC-based multi-solvent electrolytes for low temperature applications of Lithium-ion batteries. [J].Electrochimica Acta, 2004, 49(27):4857-4863
[7]曹骐,王辛龙,杨海兰,傅玉信,张志业.六氟磷酸锂制备工艺研究现状及展望[J].无机盐工业, 2010, 42(03):1-3
[8] Xu K.Nonaqueous liquid electrolytes for lithium-based rechargeable batteries[J].Chem Rew, 2004, 104(5):4303-4417
[9] 高阳,谢晓华,解晶莹等.锂离子蓄电池电解液研究进展[J].,, :479.[J].电源技术, 2003, 27(27):479-479
[10] 庄全超,武山,刘文元等.锂离子电池电解质锂盐研究进展[J].化学世界, 2002, 12(12):667-670
[11] 宋秀云.氟化工产品的发展与应用[J].化工管理, 2017, 06(06):53-54
[12] 李明, 李玉芳.六氟磷酸锂制备技术的研究进展[J].乙醛醋酸化工, 2016, 2016(10):15-17
[13]张建刚, 王瑶.电解质六氟磷酸锂制备进展及难点分析[J].无机盐工业, 2012, 44(06):57-60
[14]熊学, 戴永年.锂离子电池电解质六氟磷酸锂制备方法综述[J].云南化工, 2007, 34(02):59-62
[15]刘妍.六氟磷酸锂制备方法的探讨[J].新疆有色金属, 2009, 32(2):124-126
[16] 蒋琦, 王亮.锂电池重要材料六氟磷酸锂的制备方法[J].有机氟工业, 2011, 01(01):3-5
[17]FMC Corporation (Philadelphia, PA).Preparation of lithium hexafluorophosphate solutions: US, 5378445[P]. 1995-01-03.
[18]宁斌, 邹金鑫.六氟磷酸锂制备方法的研究进展[J].贵州化工, 2011, 36(05):26-28
[19] 孙聚堂,邓支华, 张克立, 等.固体超强酸二氯六氟磷酸及其制备方法和用途:, CN102001640B[P].2012.
[20] 谭云东.一种晶体六氟磷酸锂的制备方法:, CN102874790A[P].2013.
[21] 李世江,侯红军,杨华春,等.一种六氟磷酸锂的制备方法:, CN101723348B[P].2012.
[22]薛旭金.无机氟化物的现状及发展方向[J].无机盐工业, 2014, 46(5):1-5
[23] 杨华春,李云峰,李世江,等.一种制备六氟磷酸锂的方法:, CN101570328B[P].2013.
[24] 刘雅婷,英瑜,陈晓军,高飞,等.六氟磷酸锂碱金属盐的制备方法:, CN106745096A[P]. 2017.
[25] 李文建, 朱建军, 周新基, 等.六氟磷酸锂合成工艺:, CN104555958A[P].2015.
[26] 堀尾博英.一种六氟磷酸锂的制备法:, CN 102009972 A[P].2011.
[27] 贾风雷,陈效飞,吕雷,等.一种六氟磷酸锂的制备纯化方法:, CN106882819A[P].2017.
Outlines

/