IP Library › Granted Patent US 12,646,747
Granted Patent B2
US 12,646,747 · App. 18/053,507 · Granted Jun 2, 2026

Electrolyte material and methods of forming

Inventors: Vladimir Ouspenski (Saint-Pierre-lès-Nemours, FR); Gaurav Assat (Paris, FR)
Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.
H01M10/0562H01M10/0525H01M2300/008
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Quick Facts
Patent No.
US 12,646,747
App. No.
18/053,507
Granted
Jun 2, 2026
Kind
B2
Abstract

A solid electrolyte material can include an ammonium-containing complex metal halide. In an embodiment, the ammonium-containing complex metal halide can be represented by (NH 4 ) n M 3−z (Me k+ ) f X n+3−z+k*f , wherein 0<n, 0≤z<3, 2≤k<6, 0≤f≤1; M comprises at least an alkali metal element, X comprises a halogen, and Me comprises a divalent metal element, a trivalent metal element, a tetravalent metal element, a pentavalent metal element, a hexavalent metal element or any combination thereof.

Claims (20)

1 . A solid electrolyte material, comprising a material including an ammonium-containing complex metal halide represented by (NH 4 ) n M 3−z (Me k+ ) f X n+3−z+k*f , wherein 0<n; −1≤z≤1; 2≤k≤6; 0≤f≤1; wherein when f=0, M comprises at least two metal elements; M comprises an alkali metal element; X comprises a halogen; and Me comprises a divalent metal element, a trivalent metal element, a tetravalent metal element, a pentavalent metal element, a hexavalent metal element or any combination thereof.

2 . The solid electrolyte material of claim 1 , wherein M comprises Li.

3 . The solid electrolyte material of claim 1 , wherein M comprises Na.

4 . The solid electrolyte material of claim 1 , wherein f>0, wherein Me comprises Y, Ce, Zr, Yb, Gd, In, Sc, or any combination thereof.

5 . The solid electrolyte material of claim 4 , wherein M comprises Li and Li makes up at least 50 mol % of M.

6 . A solid electrolyte material, comprising a material including an ammonium-containing complex metal halide represented by (NH 4 ) n (Li 1−d Na d ) 2 LiMe k+ X 3+k+n , wherein 0<n, 2≤k≤6, 0≤d<1; X comprises a halogen; and Me comprises a divalent metal element, a trivalent metal element, a tetravalent metal element, a pentavalent metal element, a hexavalent metal element or any combination thereof.

7 . The solid electrolyte material of claim 1 , wherein the ammonium-containing complex metal halide is represented by (NH 4 ) n Li 1−d Na d ) 2 LiMe k+ X 3+k+n , wherein 0≤d<1.

8 . The solid electrolyte material of claim 6 , wherein Me comprises a rare earth element, Zr, Hf, Ti, Sn, Sb, In, Bi, an alkaline earth metal element, or any combination thereof.

9 . The solid electrolyte material of claim 6 , wherein 0<d.

10 . A solid electrolyte layer, comprising the solid electrolyte material of claim 6 .

11 . A mixed electron and ion conductive layer, comprising the solid electrolyte material of claim 6 and an electron conductive material.

12 . The solid electrolyte material of claim 6 , wherein X comprises at least one of Cl and Br.

13 . A solid electrolyte material, comprising a material including an ammonium-containing complex metal halide represented by (NH 4 ) n M 3−z (Me k+ ) f X n+3−z+k*f , wherein 0<n, 0≤z<3, 2≤k≤6, 0<f≤1; M comprises Li, wherein Li makes up at least 50 mol % of M; X comprises a halogen; and Me comprises a divalent metal element, a trivalent metal element, a tetravalent metal element, a pentavalent metal element, a hexavalent metal element or any combination thereof, wherein ammonium is at most 50 mol % for a total of ammonium and M.

14 . The solid electrolyte material of claim 13 , wherein Li makes up at least 66 mol % of M.

15 . The solid electrolyte material of claim 13 , wherein Me comprises a rare earth element, an alkaline earth element, Zr, In, or any combination thereof.

16 . The solid electrolyte material of claim 15 , wherein Li makes up at least 66 mol % of M.

17 . The solid electrolyte material of claim 13 , wherein the ammonium-containing complex metal halide is represented by (NH 4 ) n Li 3−z (Me k+ ) f X 3−z+k*f+n , wherein f>0.

18 . The solid electrolyte material of claim 17 , wherein Me comprises Y, Ce, Zr, Yb, Gd, In, Sc, or any combination thereof.

19 . The solid electrolyte material of claim 13 , wherein the ammonium makes up at least 10 mol % of the total of ammonium and M.

20 . The solid electrolyte material of claim 13 , wherein X comprises at least one of Cl and Br.

Continuity (3)
Division 17230625 · Apr 14, 2021
Provisional Application 63009827 · Apr 14, 2020
Related Publication 20230074642A1 · Mar 9, 2023
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