公开(公告)号：US11987496B2

公开(公告)日：2024-05-21

申请号：US17274539

申请日：2019-09-04

Applicant: DAEGU CATHOLIC UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION

Inventor： Sang Ryul Lee ,  Kyoung Chol Kim ,  Ja Young Park ,  Ji Hyeong Kim ,  Jeong In Kim ,  Seok Ju Lee ,  Jongyun Jang ,  Seongjeong Lee ,  Mingi Chu ,  Dong Wook Kang

IPC: C01B21/086 ,  C01B21/093

CPC classification number: C01B21/086 ,  C01B21/093

Abstract: A method for producing a bis(fluorosulfonyl)imide lithium salt is disclosed. The method includes the steps of: (a) reacting bis(chlorosulfonyl)imide with NH4F(HF)n (n=0-10) to prepare ammonium bis(fluorosulfonyl)imide; and (b) reacting the ammonium bis(fluorosulfonyl)imide with a lithium base, wherein in at least one of steps (a) and (b), after the reaction, a process of adding an alkoxy trialkyl silane to the reaction solution to remove a fluorine anion is performed.