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Title:
LITHIUM BISFLUOROSULFONYLIMIDE AND METHOD FOR PURIFYING LITHIUM BISFLUOROSULFONYLIMIDE
Document Type and Number:
WIPO Patent Application WO/2023/236574
Kind Code:
A1
Abstract:
The present application relates to lithium bisfluorosulfonylimide and a method for purifying lithium bisfluorosulfonylimide. The method comprises: providing a mixture comprising lithium bisfluorosulfonylimide; adding an organic ammonium salt to the mixture, and reacting same to obtain an intermediate mixture; and under alkaline conditions, reacting the intermediate mixture with lithium ions to obtain lithium bisfluorosulfonylimide. The method of the present application can improve the purity of lithium bisfluorosulfonylimide.

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Inventors:
ZENG XUEQIANG (CN)
CHENG SICONG (CN)
GAO JUN (CN)
WEI XINNIAN (CN)
Application Number:
PCT/CN2023/075349
Publication Date:
December 14, 2023
Filing Date:
February 10, 2023
Export Citation:
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Assignee:
CATL SICONG NOVEL MAT CO LTD (CN)
International Classes:
C01B21/086
Foreign References:
CN106659947A2017-05-10
CN104961110A2015-10-07
CN109928371A2019-06-25
CN114506829A2022-05-17
CN104085864A2014-10-08
CN107215853A2017-09-29
CN110668411A2020-01-10
CN109982966A2019-07-05
US20160016797A12016-01-21
Other References:
HU, FENGBO, ,ZHANG QINGHUA, ZHANN XIAOLI, CHEN FENGQIU: "Synthesis, Performance and Application Progress of Bis(fluoro-based sulfonyl)imides and their Salts", CHEMICAL INDUSTRY AND ENGINEERING PROGRESS, BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, MEMBER OF CHINESE ACADEMY OF ENGINEERING, PROFESSOR, CHINA, vol. 30, no. 10, 31 December 2011 (2011-12-31), pages 2097 - 2105, XP009551191, ISSN: 1000-6613
Attorney, Agent or Firm:
BEIJING EAST IP LTD. et al. (CN)
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