Patent ID: 8134027

Claim:
A method for producing a fluorosulfonylimide salt comprising reacting a fluoride compound containing at least one element selected from the group consisting of di- or higher polyvalent elements of Group 11 to Group 15 and Period 4 to Period 6 (excluding arsenic and antimony) with a compound represented by the following general formula (I) to obtain a fluorosulfonylimide salt represented by the general formula (II): [Chemical Formula 1] wherein R 1 denotes at least one element selected from the group consisting of di- or higher polyvalent elements of Group 11 to Group 15 and Period 4 to Period 6 (excluding arsenic and antimony); R 3 denotes fluorine, chlorine or a fluorinated alkyl group having 1 to 6 carbon atoms; R 4 denotes fluorine or a fluorinated alkyl group having 1 to 6 carbon atoms; and m denotes an integer of 2 or 3.