IP Library › Granted Patent US 12,388,067
Granted Patent B2
US 12,388,067 · App. 17/725,894 · Granted Aug 12, 2025

Anodes for lithium-based energy storage devices

Inventors: Alexander J. Warren (Lake View, NY); Peter G. Symons (Buffalo, NY); John C. Brewer (Rochester, NY); Kyle P. Povlock (Fairport, NY); Kevin Tanzil (Rochester, NY); Robert G. Anstey (Tonawanda, NY); Paul D. Garman (Westerville, OH)
Assignee: Graphenix Development, Inc.
H01M4/0404H01M4/0428H01M4/134H01M4/366H01M4/386H01M4/626H01M10/0525
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Quick Facts
Patent No.
US 12,388,067
App. No.
17/725,894
Granted
Aug 12, 2025
Kind
B2
Abstract

An anode for an energy storage device includes a current collector having an electrically conductive layer and a surface layer overlaying the electrically conductive layer. A lithium storage layer may overlay the surface layer. The surface layer may include manganese. The lithium storage layer may include at least 40 atomic % silicon, germanium, or a combination thereof.

Claims (26)

1. An anode for an energy storage device, the anode comprising:

a) a current collector comprising an electrically conductive layer and a surface layer overlaying the electrically conductive layer; and

b) a lithium storage layer overlaying the surface layer,

wherein:

i) the surface layer comprises a first surface sublayer comprising manganese,

ii) the surface layer comprises a second surface sublayer comprising a transition oxometallate or a metal oxide, wherein the transition oxometallate or the metal oxide comprises a metal other than manganese, wherein the second surface sublayer is in contact with the first surface sublayer, and

iii) the lithium storage layer comprises at least 40 atomic % silicon, germanium, or a combination thereof.

2. The anode of claim 1 , wherein the second surface sublayer interposed between the first surface sublayer and the lithium storage layer.

3. The anode of claim 1 , wherein the second surface sublayer comprises a transition oxometallate comprising titanium, chromium, vanadium, iron, cobalt, nickel, molybdenum, tungsten, zirconium, or niobium.

4. The anode of claim 1 , wherein the second surface sublayer comprises a metal oxide comprising titanium, vanadium, chromium, iron, cobalt, nickel, copper, zinc, molybdenum, tungsten, silver, zirconium, hafnium, tin, aluminum, indium, or niobium.

5. The anode of claim 1 , wherein at least a portion of the first surface sublayer comprises zero valent or divalent manganese.

6. The anode of claim 5 , wherein the first surface sublayer comprises a mixture or an alloy of manganese and another metal.

7. The anode of claim 5 , wherein the first surface sublayer further comprises tin.

8. The anode of claim 5 , wherein the first surface sublayer further comprises zinc.

9. The anode of claim 5 , wherein the first surface sublayer further comprises a transition metal.

10. The anode of claim 1 , wherein the surface layer has an average thickness in a range of 0.5 nm to 2000 nm.

11. The anode of claim 1 , wherein the current collector is characterized by a surface roughness of R z ≥2.5 μm.

12. The anode of claim 1 , wherein the electrically conductive layer comprises copper.

13. The anode of claim 1 , wherein the electrically conductive layer is characterized by a tensile strength of at least 500 MPa.

14. The anode of claim 1 , wherein the lithium storage layer is a continuous porous lithium storage layer.

15. The anode of claim 14 , wherein the lithium storage layer comprises at least 80 atomic % of amorphous silicon.

16. The anode of claim 15 , wherein the density of the lithium storage layer is in a range of 1.1 to 2.29 g/cm 3 .

17. The anode of claim 14 , wherein the lithium storage layer has an average thickness of at least 7 μm.

18. The anode of claim 1 , wherein the lithium storage layer includes less than 10 atomic % carbon and is substantially free of high aspect ratio nanostructures.

19. The anode of claim 1 , wherein the electrically conductive layer comprises nickel.

20. The anode of claim 1 , wherein the second surface sublayer comprises chromate.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 2, 2022
From: WARREN, ALEXANDER J.; BREWER, JOHN C.; POVLOCK, KYLE P.; TANZIL, KEVIN; ANSTEY, ROBERT G.; GARMAN, PAUL D.
To: GRAPHENIX DEVELOPMENT, INC.
Reel/Frame 059784/0220 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 2, 2022
From: SYMONS, PETER G.
To: ELECTROSYNTHESIS COMPANY, INC.
Reel/Frame 059784/0280 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 2, 2022
From: ELECTROSYNTHESIS COMPANY, INC.
To: GRAPHENIX DEVELOPMENT, INC.
Reel/Frame 059784/0342 →
Continuity (2)
Provisional Application 63179974 · Apr 26, 2021
Related Publication 20220344627A1 · Oct 27, 2022
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