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US 2025/0066198 A1Published application
Dry dispersion of ammonium bis(fluorosulfonyl)imide (nh4fsi) salt with an at least bimodal particle size distribution
AssigneeSpecialty Operations France
InventorJoo-Hee Kang
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Abstract
The present disclosure relates to a dry dispersion of ammonium bis(fluorosulfonyl)imide (NH4FSI) salt of formula (I): [F—SO2—N−—SO2—F], NH4+ (I) characterized by having at least two particle size fractions, i.e. a small-size fraction and a large-size fraction. The present disclosure also relates to the use of such dispersion to prepare a salt of bis(fluorosulfonyl)imide selected from the group consisting of a lithium slat, a sodium salt or a potassium salt.
Claims15
A dry dispersion of ammonium bis(fluorosulfonyl)imide (NH4FSI) salt of formula (I):
- [F—SO2—N−—SO2—F],NH4+ (I)
- wherein the NH4FSI salt is in a form of a solvate comprising:
- 50 to 99.9 wt. %, of the NH4FSI salt, and
- 0.1 to 50 wt. %, of solvent S2, which is selected from the group consisting of cyclic and acyclic ethers,
- wherein the dry dispersion comprises at least two particle size fractions, a small-size fraction and a large-size fraction.
2 more elements
A dry dispersion of a bis(fluorosulfonyl)imide (MFSI) salt of formula (II):
- [F—SO2—N−—SO2—F],M+ (II)
- wherein M is selected from the group consisting of Li, Na and K, and
- wherein the dry dispersion comprises at least two particle size fractions.
Dependencies are inferred from the claim text.