Methods and materials for protection of sulfide glass solid electrolytes

Patent metadata

Field	Value
Publication number	US-11876174-B2
Application number	US-202318175374-A
Country	US
Kind code	B2
Filing date	Feb 27, 2023
Priority date	Jan 15, 2020
Publication date	Jan 16, 2024
Grant date	Jan 16, 2024

Abstract

A sulfide glass solid electrolyte sheet can be protected from reaction with moisture by a thin metal layer coating converted to a thin electrochemically functional and protective compound layer. The converted protective compound layer is electrochemically functional in that it allows for through transport of lithium ions.

First claim

What is claimed:

1. A battery cell, comprising:
an anode;
a cathode; and
a protected sulfide glass solid electrolyte, comprising,
a lithium ion conducting sulfide glass sheet having first and second opposing principal side surfaces,
a first converted protective compound layer disposed adjacent to and in direct touching contact with the first principal side surface of the sulfide glass sheet, wherein the first converted protective compound layer comprises a first metal that is not lithium and a first nonmetal, wherein the first nonmetal is selected from the group consisting of a nonmetal chalcogen, a nonmetal halogen, and a nonmetal pnictogen, and
a second converted protective compound layer disposed adjacent to and in direct touching contact with the second principal side surface of the glass sheet, wherein the second converted protective compound layer comprises a second metal that is not lithium and a second nonmetal, wherein the first nonmetal is selected from the group consisting of a nonmetal chalcogen, nonmetal halogen, and nonmetal pnictogen,
wherein the first and second metal of the first and second converted protective compound layer respectively are different metals.

2. The battery cell of claim 1 , wherein the first nonmetal is selected from the group consisting of oxygen, sulfur, nitrogen, iodine and bromine.

3. The battery cell of claim 1 , wherein the first converted protective compound layer is a binary compound essentially consisting of the first metal and the first non-metal.

4. The battery cell of claim 3 , wherein the first and second metals selected from the group consisting of Al, Sn, In, Si, Cu, Fe, Mo, W, Ta, Ag, and Ti.

5. The battery cell of claim 1 , wherein the second metal is selected from the group consisting of Al, Sn, In, Si, Cu, Fe, Mo, W, Ta, Ag and Ti.

6. The battery cell of claim 2 , wherein the first or second nonmetal is oxygen.

7. The protected sulfide glass solid electrolyte of claim 1 , wherein the thickness of the first converted protective compound layer is in the range of 10 nm to 100 nm.

8. The battery cell of claim 1 , wherein the anode is lithium metal.

9. The battery cell of claim 1 , wherein the cathode comprises intercalation materials having a voltage versus lithium metal that is greater than about 2.5 V.

10. The battery cell of claim 1 , wherein the cathode is a nickel manganese cobalt cathode.

11. The battery cell of claim 1 , wherein the battery cell is fully solid state.

12. A battery cell, comprising:
an anode;
a cathode; and
a protected sulfide glass solid electrolyte, comprising,
a lithium ion conducting sulfide glass sheet having first and second opposing principal side surfaces,
a first converted protective compound layer disposed adjacent to and in direct touching contact with the first principal side surface of the sulfide glass sheet, wherein the first converted protective compound layer comprises a first metal that is not lithium and a first nonmetal, wherein the first nonmetal is selected from the group consisting of a nonmetal chalcogen, a nonmetal halogen, and a nonmetal pnictogen, and
a second converted protective compound layer disposed adjacent to and in direct touching contact with the second principal side surface of the glass sheet, wherein the second converted protective compound layer comprises a second metal that is not lithium and a second nonmetal, wherein the first nonmetal is selected from the group consisting of a nonmetal chalcogen, nonmetal halogen, and nonmetal pnictogen,
wherein the first or second nonmetal is selected from the group consisting of sulfur, nitrogen and iodine.

13. The battery cell of claim 12 , wherein the first or second nonmetal is sulfur.

14. The battery cell of claim 12 , wherein the first or second nonmetal is nitrogen.

15. The battery cell of claim 12 , wherein the first or second nonmetal is iodine.

16. The battery cell of claim 12 , wherein the anode is lithium metal.

17. The battery cell of claim 12 , wherein the cathode comprises intercalation materials having a voltage versus lithium metal that is greater than about 2.5 V.

18. The battery cell of claim 12 , wherein the cathode is a nickel manganese cobalt cathode.

19. The battery cell of claim 12 , wherein the battery cell is fully solid state.

Assignees

• Polyplus Battery Co Inc

Inventors

• Visco Steven J
• Nimon Vitaliy
• Nimon Yevgeniy S
• Katz Bruce D

Classifications

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M50/403

  Manufacturing processes of separators, membranes or diaphragms · CPC title

• H01M50/437

  Glass · CPC title

• H01M50/451

  comprising layers of only organic material and layers containing inorganic material · CPC title