Synthesis method of fluoro-bis-sulfonyl imino lithium compound

• Main Authors: PENG LEI, HE JING, HAO LIGEN, WANG LEICAI, LIU MIAO, YUAN LIFENG, ZHANG QIAN, MIAO QIANGQIANG, GAO LINNING, HUANG DAOXIAO
• Format: Patent
• Language: Chinese; English
• Published: 04.08.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to the technical field of lithium battery electrolyte, and provides a synthetic method of a fluoro-bis-sulfonyl lithium imino compound, which comprises the following steps: S1, carrying out substitution reaction on a compound I and ammonia gas under an alkaline condition to obtain an intermediate I; the compound I is a sulfonyl fluoride-perfluoroalkyl compound; s2, the intermediate I and lithium carbonate are subjected to a salt forming reaction, and the fluoro bis-sulfonyl imino lithium compound is obtained. Through the technical scheme, the problems of low electrolyte performance and the like of the lithium ion battery in the prior art are solved. 本发明涉及锂电池电解质技术领域，提出了一种氟代双磺酰基亚氨基锂化合物的合成方法，包括以下步骤：S1:化合物I在碱性条件下与氨气发生取代反应得到中间体I；所述化合物I为磺酰氟-全氟烷基类化合物；S2:中间体I与碳酸锂发生成盐反应得到氟代双磺酰基亚氨基锂化合物。通过上述技术方案，解决了现有技术中锂离子电池的电解质性能低等问题。