Treating sulfide glass surfaces and making solid state laminate electrode assemblies

Patent metadata

Field	Value
Publication number	US-11817569-B2
Application number	US-202217817494-A
Country	US
Kind code	B2
Filing date	Aug 4, 2022
Priority date	Jul 7, 2017
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

Methods for making solid-state laminate electrode assemblies include methods of forming a solid electrolyte interphase (SEI) by ion implanting nitrogen and/or phosphorous into the glass surface by ion implantation.

First claim

What is claimed:

1. A solid-state laminate electrode assembly, comprising:
a lithium ion conducting sulfide glass substrate, the substrate comprising a sulfide glass solid electrolyte sheet having room temperature Li ion conductivity of at least 10 −5 S/cm, the sulfide glass substrate having first and second major surfaces;
a solid electrolyte interphase (SEI) layer comprising lithium and one or both of nitrogen and phosphorous at the first major surface of the sulfide glass substrate.

2. The solid-state laminate electrode assembly of claim 1 , wherein the SEI layer is continuous.

3. The solid-state laminate electrode assembly of claim 1 , wherein the SEI comprises lithium nitride.

4. The solid-state laminate electrode assembly of claim 1 , wherein the SEI comprises lithium phosphide.

5. The solid-state laminate electrode assembly of claim 1 , wherein the SEI is a continuous layer of a lithium nitride and/or lithium phosphide compound.

6. The solid-state laminate electrode assembly of claim 1 , wherein the SEI is not greater than 10 nm deep.

7. The solid-state laminate electrode assembly of claim 1 , wherein the SEI is not greater than 10-100 nm deep.

8. The solid-state laminate electrode assembly of claim 1 , wherein the SEI is not greater than 100-1000 nm deep.

9. The solid-state laminate electrode assembly of claim 5 , further comprising a lithium ion intercalating transition metal oxide electrode adjacent to the second major surface of the sulfide glass substrate of the solid-state laminate electrode assembly.

10. The solid-state laminate electrode assembly of claim 9 , wherein a battery electrolyte is disposed between the second major surface of the sulfide glass substrate and the positive electrode.

11. The solid-state laminate electrode assembly of claim 10 , wherein the positive electrode is disposed in direct contact with the second major surface of the sulfide glass substrate.

12. The solid-state laminate electrode assembly of claim 11 , wherein the assembly is fully solid-state.

Assignees

• Polyplus Battery Co Inc

Inventors

• Visco Steven J
• Nimon Vitaliy
• Nimon Yevgeniy S
• Katz Bruce D
• Swisher Richard L

Classifications

• H01M4/0423 Primary

  Physical vapour deposition · CPC title

• C03C17/3626 Primary

  one layer at least containing a nitride, oxynitride, boronitride or carbonitride · CPC title

• C03C17/3649

  made of metals other than silver · CPC title

• C03C17/3671

  specially adapted for use as electrodes · CPC title

• C23C14/0641

  Nitrides (C23C14/0617 takes precedence) · CPC title