Research progress on preparation and purification of fluorine-containing chemicals in lithium-ion batteries

doi:10.1016/j.cjche.2021.09.007

Abstract

Abstract: With the development of digital products, electric vehicles and energy storage technology, electronic chemicals play an increasingly prominent role in the field of new energy such as lithium-ion batteries. Electronic chemicals have attracted extensive attention in various fields. Characteristics of high-end electronic chemicals are high purity and low impurity content, which requires a very strict separation and purification process. At present, crystallization is a key technology for their separation and purification of electronic chemicals. In this work, the representative fluorine-containing compounds in cathode and anode materials, separator and electrolyte of lithium-ion batteries are introduced. The latest technologies for the preparation and purification of four kinds of fluorine-containing battery chemicals by crystallization technology are reviewed. In addition, the research prospects and suggestions are put forward for the separation of fluorine-containing battery chemicals.

Key words: Battery chemicals, Lithium-ion batteries, Crystallization, Fluorine-containing chemicals

摘要： With the development of digital products, electric vehicles and energy storage technology, electronic chemicals play an increasingly prominent role in the field of new energy such as lithium-ion batteries. Electronic chemicals have attracted extensive attention in various fields. Characteristics of high-end electronic chemicals are high purity and low impurity content, which requires a very strict separation and purification process. At present, crystallization is a key technology for their separation and purification of electronic chemicals. In this work, the representative fluorine-containing compounds in cathode and anode materials, separator and electrolyte of lithium-ion batteries are introduced. The latest technologies for the preparation and purification of four kinds of fluorine-containing battery chemicals by crystallization technology are reviewed. In addition, the research prospects and suggestions are put forward for the separation of fluorine-containing battery chemicals.

关键词: Battery chemicals, Lithium-ion batteries, Crystallization, Fluorine-containing chemicals

Xiaobin Liu, Zhenguo Gao, Jingcai Cheng, Junbo Gong, Jingkang Wang. Research progress on preparation and purification of fluorine-containing chemicals in lithium-ion batteries[J]. Chinese Journal of Chemical Engineering, 2022, 41(1): 73-84.

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