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Title:
PREPARATION PROCESS FOR FLUOROETHYLENE CARBONATE AND LITHIUM BATTERY APPLYING FLUOROETHYLENE CARBONATE
Document Type and Number:
WIPO Patent Application WO/2023/098189
Kind Code:
A1
Abstract:
The present invention relates to the technical field of lithium battery additives. Disclosed are a preparation process for fluoroethylene carbonate and a lithium battery applying fluoroethylene carbonate. The preparation process comprises: mixing raw materials to obtain a reaction solution; according to a height interval, dividing the interval where the reaction solution is located into at least two position areas from bottom to top, performing a thermal insulation reaction on the reaction solution, respectively suctioning away the reaction solution in each position area, and then mixing same to obtain a circulating liquid, performing gradient cooling on the circulating liquid, mixing the circulating liquid with the reaction solution, and sequentially stopping suctioning away the reaction solution in each position area from bottom to top to obtain a crystal-containing fluid; and performing solid-liquid separation and distillation purification on the crystal-containing fluid to obtain fluoroethylene carbonate. The preparation process in the present application is beneficial to continuing crystallization of ungrown small crystals, so that the yield of fluoroethylene carbonate is improved, and fluoroethylene carbonate prepared in the present application is used for the lithium battery, so that the high and low temperature performance of an electrolyte in the lithium battery can be improved.

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Inventors:
WANG ZHENYI (CN)
WANG XIAOLONG (CN)
ZHOU LONG (CN)
GUAN XIAODONG (CN)
ZHOU YANG (CN)
Application Number:
PCT/CN2022/116186
Publication Date:
June 08, 2023
Filing Date:
August 31, 2022
Export Citation:
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Assignee:
SUZHOU HUAYI NEW ENERGY TECH CO LTD (CN)
International Classes:
C07D317/42; H01M10/052; H01M10/0567
Foreign References:
CN114163412A2022-03-11
CN101210005A2008-07-02
CN105664521A2016-06-15
CN207769263U2018-08-28
JP2004161638A2004-06-10
Attorney, Agent or Firm:
BEIJING WEIZHENG PATENT AGENCY CO., LTD. (CN)
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