IP Library › Granted Patent US 6,858,349
Granted Patent B1
US 6,858,349 · App. 09/658,042 · Granted Feb 22, 2005

Battery cathode

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Quick Facts
Patent No.
US 6,858,349
App. No.
09/658,042
Granted
Feb 22, 2005
Kind
B1
Abstract

A primary alkaline battery includes a cathode having a cathode active material and carbon fibers, an anode, a separator and an alkaline electrolyte. The carbon fibers have diameters less than about 250 nanometers.

Claims (51)

1. A primary alkaline battery, comprising:

a cathode comprising a cathode active material and carbon fibers;

an anode;

a separator; and

an alkaline electrolyte,

wherein the carbon fibers comprise between about 40 and about 100 layers of graphite.

2. The battery of claim 1 , wherein the cathode comprises less than about 5% of carbon fibers by weight.

3. The battery of claim 1 , wherein the cathode comprises less than about 4% of carbon fibers by weight.

4. The battery of claim 1 , wherein the cathode comprises less than about 3% of carbon fibers by weight.

5. The battery of claim 1 , wherein the cathode comprises less than about 2% of carbon fibers by weight.

6. The battery of claim 1 , wherein the cathode comprises greater than about 86% of the cathode active material by weight.

7. The battery of claim 1 , wherein the cathode comprises greater than about 88% of the cathode active material by weight.

8. The battery of claim 1 , wherein the cathode comprises greater than about 92% of the cathode active material by weight.

9. The battery of claim 1 , wherein the carbon fibers have a diameter less than about 250 nanometers.

10. The battery of claim 1 , wherein the carbon fibers have a diameter between about 60 nanometers and about 100 nanometers.

11. The battery of claim 1 , wherein the cathode comprises greater than about 86% of the cathode active material by weight, and less than about 5% of carbon fibers by weight.

12. The battery of claim 1 , wherein the cathode further comprises a binder.

13. A primary alkaline battery, comprising:

a cathode comprising a cathode active material and carbon fibers;

an anode;

a separator; and

an alkaline electrolyte,

wherein the carbon fibers have a surface energy between about 50 mJ/m 2 and about 300 mJ/m 2 .

14. The battery of claim 13 , wherein the cathode comprises less than about 5% of carbon fibers by weight.

15. The battery of claim 13 , wherein the cathode comprises less than about 4% of carbon fibers by weight.

16. The battery of claim 13 , wherein the cathode comprises less than about 3% of carbon fibers by weight.

17. The battery of claim 13 , wherein the cathode comprises less than about 2% of carbon fibers by weight.

18. The battery of claim 13 , wherein the cathode comprises greater than about 86% of the cathode active material by weight.

19. The battery of claim 13 , wherein the cathode comprises greater than about 88% of the cathode active material by weight.

20. The battery of claim 13 , wherein the cathode comprises greater than about 92% of the cathode active material by weight.

21. The battery of claim 13 , wherein the carbon fibers have a diameter less than about 250 nanometers.

22. The battery of claim 13 , wherein the carbon fibers have a diameter between about 60 nanometers and about 100 nanometers.

23. The battery of claim 13 , wherein the cathode comprises greater than about 86% of the cathode active material by weight, and less than about 5% of carbon fibers by weight.

24. The battery of claim 13 , wherein the cathode further comprises a binder.

25. A primary alkaline battery, comprising:

a cathode comprising a cathode active material and carbon fibers;

an anode;

a separator; and

an alkaline electrolyte,

wherein the carbon fibers have a graphitic index of less than about 85%.

26. The battery of claim 25 , wherein the cathode comprises less than about 5% of carbon fibers by weight.

27. The battery of claim 25 , wherein the cathode comprises less than about 4% of carbon fibers by weight.

28. The battery of claim 25 , wherein the cathode comprises less than about 3% of carbon fibers by weight.

29. The battery of claim 25 , wherein the cathode comprises less than about 2% of carbon fibers by weight.

30. The battery of claim 25 , wherein the cathode comprises greater than about 86% of the cathode active material by weight.

31. The battery of claim 25 , wherein the cathode comprises greater than about 88% of the cathode active material by weight.

32. The battery of claim 25 , wherein the cathode comprises greater than about 92% of the cathode active material by weight.

33. The battery of claim 25 , wherein the carbon fibers have a diameter less than about 250 nanometers.

34. The battery of claim 25 , wherein the carbon fibers have a diameter between about 60 and about 100 nanometers.

35. The battery of claim 25 , wherein the cathode comprises greater than about 86% of the cathode active material by weight, and less than about 5% of carbon fibers by weight.

36. The battery of claim 25 , wherein the cathode further comprises a binder.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2016
From: THE GILLETTE COMPANY
To: DURACELL U.S. OPERATIONS, INC.
Reel/Frame 037931/0489 →