Patent ID: 11958742
Assignee: SOLID POWER OPERATING, INC.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A method for producing a water-reactive alkali metal sulfide compound comprising:
dissolving a substantially anhydrous alkali metal salt precursor and a substantially anhydrous sulfide precursor compound in one or more substantially anhydrous polar solvents, wherein the polar solvent provides differential solubility for a high solubility alkali metal sulfide and a low solubility by-product, and wherein the anhydrous sulfide precursor compound is a polysulfide;
forming a mixture comprising a supernatant of the high solubility alkali metal sulfide dissolved in the polar solvent, and a precipitate of the low solubility by-product;
separating the precipitate of the low solubility by-product from the supernatant;
evaporating the polar solvent from the supernatant; and
a heat treatment to isolate the water-reactive alkali metal sulfide.