IP Library › Granted Patent US 11,901,500
Granted Patent B2
US 11,901,500 · App. 16/897,543 · Granted Feb 13, 2024

Sandwich electrodes

Inventors: Xiaohua Liu (Irvine, CA); Giulia Canton (Lake Forest, CA); David J. Lee (Irvine, CA); Shiang Teng (Irvine, CA); Benjamin Yong Park (Mission Viejo, CA)
Assignee: Enevate Corporation
H01M10/0525H01M4/0404H01M4/134H01M4/1395H01M4/364H01M4/386H01M4/583H01M4/625H01M4/661H01M4/74H01M4/742H01M2004/027H01M2004/028
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Quick Facts
Patent No.
US 11,901,500
App. No.
16/897,543
Granted
Feb 13, 2024
Kind
B2
Abstract

In some embodiments, an electrode can include a first and second conductive layer. At least one of the first and second conductive layers can include porosity configured to allow electrolyte to flow therethrough. The electrode can also include an electrochemically active layer having electrochemically active material sandwiched between the first and second conductive layers. The electrochemically active layer can be in electrical communication with the first and second conductive layers.

Claims (62)

1. An electrode comprising: a first current collector; a second current collector, at least one of the first and second current collectors comprising porosity configured to allow an electrolyte to flow therethrough; and an electrochemically active layer comprising electrochemically active material sandwiched between a first and second conductive layers, wherein the electrochemically active layer is in electrical communication with the first and second current collectors, wherein the electrochemically active layer comprises at least about 50% to about 99% by weight of silicon.

2. The electrode of claim 1 , wherein the at least one of the first and second current collectors comprises foam, mesh, or perforated material.

3. The electrode of claim 1 , wherein the at least one of the first and second current collectors comprises metal.

4. The electrode of claim 1 , wherein the at least one of the first and second current collectors comprises nickel foam.

5. The electrode of claim 1 , wherein the at least one of the first and second current collectors comprises carbon.

6. The electrode of claim 1 , wherein the at least one of the first and second current collectors comprises both the first and second current collectors.

7. The electrode of claim 1 , wherein the electrochemically active layer comprises silicon, germanium, tin, oxide, graphite, or a combination thereof.

8. The electrode of claim 1 , wherein the electrochemically active layer comprises a film.

9. The electrode of claim 8 , wherein the film comprises a silicon carbon composite film.

10. The electrode of claim 1 , wherein the electrochemically active layer comprises at least about 50% to about 99% by weight of silicon.

11. The electrode of claim 10 , wherein the electrochemically active layer comprises the silicon at about 60% to about 99% by weight.

12. The electrode of claim 11 , wherein the electrochemically active layer comprises the silicon at about 70% to about 99% by weight.

13. The electrode of claim 12 , wherein the electrochemically active layer comprises the silicon at about 80% to about 99% by weight.

14. The electrode of claim 1 , further comprising an attachment substance between the electrochemically active layer and the first and/or second current collector.

15. The electrode of claim 14 , wherein the attachment substance comprises polyamideimide, polyimide resin, polyacrylic acid, or a combination thereof.

16. The electrode of claim 1 , further comprising a third current collector and a second electrochemically active layer comprising electrochemically active material, wherein the second electrochemically active layer is sandwiched between the third current collector and the first or second current collector.

17. The electrode of claim 16 , wherein the electrochemically active layer and the second electrochemically active layer comprise the same electrochemically active material.

18. The electrode of claim 1 , wherein the electrode is a negative electrode.

19. An electrochemical cell comprising the electrode of claim 1 .

20. An electrochemical cell with an electrode comprising:a first current collector; a second current collector, at least one of the first and second current collectors comprising porosity configured to allow an electrolyte to flow therethrough; and an electrochemically active layer comprising electrochemically active material sandwiched between a first and second conductive layers, wherein the electrochemically active layer is in electrical communication with the first and second current collectors, wherein the electrochemical cell comprises a lithium ion battery.

21. The electrochemical cell of claim 20 , wherein the at least one of the first and second current collectors comprises foam, mesh, or perforated material.

22. The electrochemical cell of claim 20 , wherein the at least one of the first and second current collectors comprises metal.

23. The electrochemical cell of claim 20 , wherein the at least one of the first and second current collectors comprises nickel foam.

24. The electrochemical cell of claim 20 , wherein the at least one of the first and second current collectors comprises carbon.

25. The electrochemical cell of claim 20 , wherein the at least one of the first and second current collectors comprises both the first and second current collectors.

26. The electrochemical cell of claim 20 , wherein the electrochemically active layer comprises silicon, germanium, tin, oxide, graphite, or a combination thereof.

27. An electrode comprising:a first current collector; a second current collector, at least one of the first and second current collectors comprising porosity configured to allow an electrolyte to flow therethrough; and an electrochemically active layer comprising electrochemically active material sandwiched between a first and second conductive layers, wherein the electrochemically active layer is in electrical communication with the first and second current collectors, wherein the electrochemically active layer comprises a silicon carbon composite film.

28. The electrode of claim 27 , wherein the at least one of the first and second current collectors comprises foam, mesh, or perforated material.

29. The electrode of claim 27 , wherein the at least one of the first and second current collectors comprises metal.

30. The electrode of claim 27 , wherein the at least one of the first and second current collectors comprises nickel foam.

31. The electrode of claim 27 , wherein the at least one of the first and second current collectors comprises carbon.

32. The electrode of claim 27 , wherein the at least one of the first and second current collectors comprises both the first and second current collectors.

33. The electrode of claim 27 , wherein the electrochemically active layer comprises silicon, germanium, tin, oxide, graphite, or a combination thereof.

34. An electrode comprising:

a first current collector;

a second current collector, at least one of the first and second current collectors comprising porosity configured to allow an electrolyte to flow therethrough; and

an electrochemically active layer comprising electrochemically active material sandwiched between the first and second conductive layers, wherein the electrochemically active layer is in electrical communication with the first and second current collectors, and wherein the electrochemically active layer comprises at least about 50% to about 99% by weight of silicon.

35. The electrode of claim 34 , wherein the at least one of the first and second current collectors comprises foam, mesh, or perforated material.

36. The electrode of claim 34 , wherein the at least one of the first and second current collectors comprises metal.

37. The electrode of claim 34 , wherein the at least one of the first and second current collectors comprises nickel foam.

38. The electrode of claim 34 , wherein the at least one of the first and second current collectors comprises carbon.

39. The electrode of claim 34 , wherein the at least one of the first and second current collectors comprises both the first and second current collectors.

40. The electrode of claim 34 , wherein the electrochemically active layer comprises silicon, germanium, tin, oxide, graphite, or a combination thereof.

41. The electrode of claim 34 , wherein the electrochemically active layer comprises the silicon at about 60% to about 99% by weight.

42. The electrode of claim 34 , wherein the electrochemically active layer comprises the silicon at about 70% to about 99% by weight.

43. The electrode of claim 34 , wherein the electrochemically active layer comprises the silicon at about 80% to about 99% by weight.

44. An electrode comprising:a first current collector; a second current collector, at least one of the first and second current collectors comprising porosity configured to allow an electrolyte to flow therethrough; an electrochemically active layer comprising electrochemically active material sandwiched between a first and second conductive layers, wherein the electrochemically active layer is in electrical communication with the first and second current collectors; and an attachment substance between the electrochemically active layer and the first and/or second current collector, wherein the attachment substance comprises polyamideimide, polyimide resin, polyacrylic acid, or a combination thereof.

45. The electrode of claim 44 , wherein the at least one of the first and second current collectors comprises foam, mesh, or perforated material.

46. The electrode of claim 44 , wherein the at least one of the first and second current collectors comprises metal.

47. The electrode of claim 44 , wherein the at least one of the first and second current collectors comprises nickel foam.

48. The electrode of claim 44 , wherein the at least one of the first and second current collectors comprises carbon.

49. The electrode of claim 44 , wherein the at least one of the first and second current collectors comprises both the first and second current collectors.

50. The electrode of claim 44 , wherein the electrochemically active layer comprises silicon, germanium, tin, oxide, graphite, or a combination thereof.

51. An electrode comprising:a first current collector; a second current collector, at least one of the first and second current collectors comprising porosity configured to allow an electrolyte to flow therethrough; an electrochemically active layer comprising electrochemically active material sandwiched between a first and second conductive layers, wherein the electrochemically active layer is in electrical communication with the first and second current collectors; and a third current collector and a second electrochemically active layer comprising electrochemically active material, wherein the second electrochemically active layer is sandwiched between the third current collector and the first or second current collector.

52. The electrode of claim 51 , wherein the at least one of the first and second current collectors comprises foam, mesh, or perforated material.

53. The electrode of claim 51 , wherein the at least one of the first and second current collectors comprises metal.

54. The electrode of claim 51 , wherein the at least one of the first and second current collectors comprises nickel foam.

55. The electrode of claim 51 , wherein the at least one of the first and second current collectors comprises carbon.

56. The electrode of claim 51 , wherein the at least one of the first and second current collectors comprises both the first and second current collectors.

57. The electrode of claim 51 , wherein the electrochemically active layer comprises silicon, germanium, tin, oxide, graphite, or a combination thereof.

58. The electrode of claim 51 , wherein the electrochemically active layer and the second electrochemically active layer comprise the same electrochemically active material.

59. The electrode of claim 1 , wherein the at least one of the first and second current collectors comprises a perforated copper foil.

Assignments (1)
SECURITY INTEREST Recorded Mar 10, 2026
From: ENEVATE CORPORATION
To: MCANDREWS, HELD & MALLOY LTD.
Reel/Frame 075093/0935 →
Continuity (3)
Continuation 15994976 · May 31, 2018
Provisional Application 62596019 · Dec 7, 2017
Related Publication 20200303768A1 · Sep 24, 2020