Bis(fluorosulfonyl)imide salts and preparation method thereof
AssigneeSyensqo SA
InventorsOlivier Buisine, Yeon-Joon Kim, Byeong-Ki Kim
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Abstract
The present invention relates to bis(fluorosulfonyl)imide salts, and their preparation methods. More specifically, the invention provides a new salt of bis(fluorosulfonyl)imide containing from 0.01 ppm to 10000 ppm of a halogenated alcohol. The invention further relates to a method for producing said salt of bis(fluorosulfonyl)imide, said method comprising a step of crystallizing a raw salt of bis(fluorosulfonyl)imide within a crystallization solvent comprising at least a halogenated alcohol. The use of said salt of bis(fluorosulfonyl)imide is also disclosed.
Claims7
A method for producing a salt of bis(fluorosulfonyl)imide in the form of a solid crystallized compound and containing a salt of bis(fluorosulfonyl)imide in the form of a solid crystallized compound and containing from 0.01 ppm to 10,000 ppm of a halogenated alcohol, where the salt is represented by the formula (I):
- [(FSO2)2N−]nMn+ (1),
- wherein Mn+ represents an ammonium cation, and n is an integer from 1 representing the valence of the ammonium cation Mn+, said method comprising crystallizing a salt of bis(fluorosulfonyl)imide within a crystallization solvent comprising at least a halogenated alcohol.
Dependencies are inferred from the claim text.