Patent ID: 11908994
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC H

Claim 22:
23. A method of preparing a solid electrolyte comprising a compound of Formula 1, the method comprising:
providing a Li precursor, a S precursor, a P precursor, an X precursor, a N precursor, and an M precursor;
mixing the Li precursor, the S precursor, the P precursor, the X precursor, the N precursor, and the M precursor, to prepare a solid electrolyte precursor; and
heat-treating the solid electrolyte precursor at a temperature equal to or greater than about 300° C. to prepare the solid electrolyte comprising a compound of Formula 1,

(Li1-aMa)7-d+xPS6-d-x+kNxXd  Formula 1, wherein, in Formula 1,
M is Na, K, Ca, Fe, Mg, Ag, Cu, Zr, Zn, or a combination thereof;
X is at least two of CI, Br, F, I, or a pseudohalogen; and
0.1≤x≤0.125, 0<a<1, 0<d≤1, and 0≤k<1,, wherein the compound of Formula 1 has an argyrodite crystal structure.