Electrodes including solid electrolyte ionically interconnecting porous active material particles and methods of fabricating the same

Patent metadata

Field	Value
Publication number	US-12155035-B2
Application number	US-202217736830-A
Country	US
Kind code	B2
Filing date	May 4, 2022
Priority date	Dec 14, 2012
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

A metal or metal-ion battery composition is provided that comprises anode and cathode electrodes along with an electrolyte ionically coupling the anode and the cathode. At least one of the electrodes includes active material particles provided to store and release ions during battery operation. Each of the active material particles includes internal pores configured to accommodate volume changes in the active material during the storing and releasing of the ions. The electrolyte comprises a solid electrolyte ionically interconnecting the active material particles.

First claim

What is claimed is:

1. A metal or metal-ion battery composition, comprising:
anode and cathode electrodes, wherein at least one of the anode and cathode electrodes includes active material particles comprising active material provided to store and release ions during battery operation, each of the active material particles including internal pores configured to accommodate volume changes of the active material during the storing and releasing of the ions; and
an electrolyte ionically coupling the anode electrode and the cathode electrode, wherein the electrolyte comprises a solid electrolyte ionically interconnecting the active material particles,
wherein the solid electrolyte comprises at least one solid electrolyte component, and
wherein volume changes of the active material of the active material particles during the storing and releasing of the ions exceed about 10 vol. %.

2. The metal or metal-ion battery composition of claim 1 , wherein the active material particles in the at least one electrode are substantially spherical.

3. The metal or metal-ion battery composition of claim 1 , wherein the metal or metal-ion battery composition is configured to operate substantially stably during battery operation at or above +60° C.

4. The metal or metal-ion battery composition of claim 1 , wherein the active material is arranged at least in part within the internal pores.

5. The metal or metal-ion battery composition of claim 1 ,
wherein the solid electrolyte comprises a first solid electrolyte component infiltrated at the anode electrode,
wherein the solid electrolyte comprises a second solid electrolyte component infiltrated at the cathode electrode, and
wherein a liquid electrolyte interlayer separates the first solid electrolyte component from the second solid electrolyte component.

6. The metal or metal-ion battery composition of claim 1 ,
wherein the solid electrolyte comprises a first solid electrolyte component that is arranged as a conformal coating on the active material particles of the anode electrode, the cathode electrode, or both, and
wherein the solid electrolyte comprises a second solid electrolyte component that is separate from the conformal coating.

7. The metal or metal-ion battery composition of claim 6 , wherein a thickness of the conformal coating is between 5-50 nm.

8. The metal or metal-ion battery composition of claim 1 , wherein the solid electrolyte comprises a first solid electrolyte component impregnating the at least one electrode and a second solid electrolyte component formed on a surface of the first solid electrolyte component.

9. The metal or metal-ion battery composition of claim 8 , wherein the first and second solid electrolyte components comprise different types of solid inorganic electrolyte.

10. The metal or metal-ion battery composition of claim 8 , wherein the first solid electrolyte component is more hydroscopic and more ionically conductive than the second solid electrolyte component.

11. The metal or metal-ion battery composition of claim 8 , wherein at least one of the first and second solid electrolyte components comprises a polymer solid electrolyte.

12. The metal or metal-ion battery composition of claim 1 , wherein the at least one electrode is impregnated with the solid electrolyte.

13. The metal or metal-ion battery composition of claim 12 , wherein the solid electrolyte impregnation into the at least one electrode is conducted via melt-infiltration or solution-based infiltration.

14. The metal or metal-ion battery composition of claim 12 , wherein the solid electrolyte further comprises an organic electrolyte component.

15. The metal or metal-ion battery composition of claim 14 , wherein the solid electrolyte comprises a polymer electrolyte.

16. The metal or metal-ion battery composition of claim 15 , wherein the polymer electrolyte comprises one or more of F, S and N atoms.

17. The metal or metal-ion battery composition of claim 12 , wherein the at least one electrode impregnated with the solid electrolyte is coated with a protective surface layer that physically separates the active material particles in the at least one electrode from the solid electrolyte.

18. The metal or metal-ion battery composition of claim 17 , wherein a thickness of the protective surface layer is less than about 2 microns.

19. The metal or metal-ion battery composition of claim 18 , wherein the thickness of the protective surface layer is less than about 1 micron.

20. The metal or metal-ion battery composition of claim 19 , wherein the thickness of the protective surface layer is less than about 50 nm.

21. The metal or metal-ion battery composition of claim 1 , wherein the (Original) metal or metal-ion battery composition is a lithium metal or lithium-ion battery composition.

22. The metal or metal-ion battery composition of claim 21 , wherein the at least one electrode comprises the anode electrode.

23. The metal or metal-ion battery composition of claim 22 , wherein the active material in the active material particles in the anode electrode comprises silicon.

24. The metal or metal-ion battery composition of claim 22 , wherein the active material in the active material particles in the anode electrode comprises a lithium metal or a lithium metal alloy.

25. The metal or metal-ion battery composition of claim 22 , wherein the anode electrode further comprises conductive additives in the form of carbon nanofibers, carbon nanotubes, graphene flakes, exfoliated graphite, or other types of conductive carbon particles or nanoparticles, or any combination thereof.

26. The metal or metal-ion battery composition of claim 22 , wherein the active material particles in the anode electrode each comprise a porous, electrically-conductive scaffolding matrix within which the active material is disposed, wherein the scaffolding matrix structurally supports the active material, electrically interconnects the active material within the active material particles, and accommodates the volume changes of the active material during the storing and releasing of the ions.

27. The metal or metal-ion battery composition of claim 26 , wherein the scaffolding matrix in the active material particles in the anode electrode comprises carbon.

28. The metal or metal-ion battery composition of claim 27 , wherein the scaffolding matrix in the active material particles in the anode electrode comprises porous carbon.

29. The metal or metal-ion battery composition of claim 27 , wherein the carbon within the scaffolding matrix in the active material particles in the anode electrode is carbonized from an organic precursor.

30. The metal or metal-ion battery composition of claim 29 , wherein the organic precursor is a polymer.

31. The metal or metal-ion battery composition of claim 22 , wherein the active material particles in the anode electrode are core-shell particles that each exhibits a core-shell structure.

32. The metal or metal-ion battery composition of claim 31 , wherein a core in each of the active material particles in the anode electrode is porous.

33. The metal or metal-ion battery composition of claim 32 , wherein the porous cores in the core-shell particles in the anode electrode are electrically conductive.

34. The metal or metal-io

Assignees

• Sila Nanotechnologies Inc

Inventors

• Yushin Gleb
• Zdyrko Bogdan

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/054

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M4/366

  as layered products · CPC title

• H01M10/0525

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