Interfacial materials in argyrodite-based all-solid-state batteries

Patent metadata

Field	Value
Publication number	US-2024322366-A1
Application number	US-202318116656-A
Country	US
Kind code	A1
Filing date	Mar 2, 2023
Priority date	Mar 2, 2023
Publication date	Sep 26, 2024
Grant date	—

Abstract

Particular embodiments may provide interfacial materials for a solid-state electrolyte interface. In some embodiments, the solid-state electrolyte is argyrodite-based. In some embodiments, the interfacial material may comprise a binary halide, a ternary halide, a binary sulfide, a ternary sulfide, or a combination thereof. In some embodiments, the interfacial material may be disposed at the interface of the anode and the solid-state electrolyte and/or the interface of the cathode and the solid-state electrolyte.

First claim

1 . An interfacial material for a solid state electrolyte interface, wherein the interfacial material comprises a binary halide, a ternary halide, a binary sulfide, a ternary sulfide, or a combination thereof.

2 . The interfacial material of claim 1 , wherein the interfacial material comprises a rock-salt structure.

3 . The interfacial material of claim 2 , wherein the interfacial material comprises a binary sulfide of formula AAS, wherein AA is a group 2 metal and S is Sulphur.

4 . The interfacial material of claim 3 , wherein the interfacial material comprises CaS, or SrS.

5 . The interfacial material of claim 2 , wherein the interfacial material comprises a binary halide of formula A n X m wherein:
n is substantially equal to m; A is a group 1A alkali metal; and X is a group 7A halogen.

6 . The interfacial material of claim 5 , wherein the interfacial material is LiBr, LiF, NaI, NaBr, KI, LiCl, KBr, KCl, or NaCl.

7 . The interfacial material of claim 1 , wherein the interfacial material comprises a ternary halide of formula A w B x X y , or A a X b Y c , wherein:
y is substantially equal to w+x; a is substantially equal to b+c; A is a group 1A alkali metal or a group 2 metal; B is a group 1A alkali metal; and X and Y are group 7A halogens.

8 . The interfacial material of claim 7 , wherein the interfacial material comprises K 5 BrCl 4 , K 5 Br 4 Cl, K 3 I 2 Br, K 3 BrCl 2 , K 2 BrCl, Li 2 IBr, Na 5 Br 4 Cl, K 4 NaCl 5 , K 2 NaCl 3 , Na 2 BrCl, Na 3 BrCl 2 , KNaCl 2 , Na 5 BrCl 4 , KNa 4 Cl 5 , BaIBr, or a combination thereof.

9 . The interfacial material of claim 7 , wherein the ternary halide comprises a caswellsilverite-like structure.

10 . The interfacial material of claim 1 , wherein the interfacial material comprises a ternary sulfide of formula AA 2 BBS 4 or AABBS 3 , wherein:
S is Sulfur; AA is a group 2 metal; and BB is a group 4 transition metal.

11 . The interfacial material of claim 10 , wherein the interfacial material comprises SrHfS 3 or SrZrS 3 .

12 . The interfacial material of claim 1 , wherein the energy above the convex hull (E hull ) of the interfacial material is less than about 20 meV/atom.

13 . A battery comprising:
an anode; a cathode; a solid-state electrolyte layer; and the interfacial material of claim 1 disposed at the interface of the anode and the solid state electrolyte layer.

14 . The battery of claim 13 , wherein the anode comprises a metallic sheet and the interfacial coating is disposed on the metallic sheet of the battery.

15 . The battery of claim 13 , wherein the anode comprises a particulate material and the interfacial coating is disposed on the particulate material of the anode.

16 . The battery of claim 13 , wherein the interfacial material comprises a standalone layer disposed between the anode and the solid-state electrolyte layer.

17 . The battery of claim 13 , wherein the interfacial coating comprises a layer that is disposed on the anode of the battery, a conductive additive material of the battery, a binder material of the battery, the solid-state electrolyte layer, or any combination thereof.

18 . The battery of claim 13 , wherein the anode comprises graphitic carbon, lithium, a lithium alloy, lithium titanate, silicon, a silicon-based carbon composite, or any combination thereof.

19 . The battery of claim 13 , wherein the solid-state electrolyte is argyrodite-based.

20 . The battery of claim 13 , wherein the solid-state electrolyte comprises LPSC, Li 6 PS 5 Cl, a doped composition of LPSC, a doped composition of Li 6 PS 5 Cl, an off-stoichiometric composition of LPSC, an off-stoichiometric composition of Li 6 PS 5 Cl, or any combination thereof.

Assignees

• Rivian Ip Holdings Llc

Inventors

• Mahbub Rubayyat
• Rangasamy Ezhiylmurugan
• Kuppan Saravanan
• Aykol Muratahan
• Gittleson Forrest Stephen

Classifications

• H01M4/382

  Lithium (H01M4/405 takes precedence) · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M4/366

  as layered products · CPC title