	US 11,697,589 B2
	Composition of bis(fluorosulfonyl)imide lithium salt
Grégory Schmidt, Pierre-Benite (FR); Rémy Teissier, Pierre-Benite (FR); and Jean-Luc Couturier, Pierre-Benite (FR)
Assigned to ARKEMA FRANCE, Colombes (FR)
Appl. No. 17/59,856
Filed by Arkema France, Colombes (FR)
PCT Filed May 28, 2019, PCT No. PCT/FR2019/051244 § 371(c)(1), (2) Date Nov. 30, 2020, PCT Pub. No. WO2019/229366, PCT Pub. Date Dec. 5, 2019.
Claims priority of application No. 1854788 (FR), filed on Jun. 1, 2018.
Prior Publication US 2021/0221685 A1, Jul. 22, 2021
Int. Cl. C01B 21/092 (2006.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01)

CPC C01B 21/0926 (2013.01) [H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 2300/0005 (2013.01)]

21 Claims

1. A composition comprising:

at least 99.75% by weight of a lithium salt of bis(fluorosulfonyl)imide;

acetic acid in a mass content greater than 0 and less than or equal to 400 ppm; and at least one of:

butyl acetate in a mass content ranging from greater than 0 to less than or equal to 2000 ppm,

Cl⁻ions in a mass content ranging from greater than 0 to less than or equal to 20 ppm, or

SO₄²⁻ions in a mass content ranging from greater than 0 to less than or equal to 300 ppm.