Primary alkaline battery with integrated in-cell resistances

Patent metadata

Field	Value
Publication number	US-11500026-B2
Application number	US-201916574019-A
Country	US
Kind code	B2
Filing date	Sep 17, 2019
Priority date	Jun 20, 2014
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

The invention is directed toward a primary AA alkaline battery. The primary AA alkaline battery includes an anode; a cathode; an electrolyte; and a separator between the anode and the cathode. The anode includes an electrochemically active anode material. The cathode includes an electrochemically active cathode material. The electrolyte includes a hydroxide. The primary AA alkaline battery has an integrated in-cell ionic resistance (Ri) at 22° C. of less than about 39 mΩ.

First claim

What is claimed is:

1. A primary AA alkaline battery comprising:
an anode, the anode comprising an electrochemically active anode material;
a cathode, the cathode comprising an electrochemically active cathode material;
an electrolyte, the electrolyte comprising a hydroxide;
a separator therebetween the anode and the cathode; and
an integrated in-cell ionic resistance (Ri) at 22° C. of less than 39 mΩ;
wherein the electrochemically active cathode material comprises a high-valence nickel compound, a delithiated layered lithium nickel oxide, a partially delithiated layered nickel oxide, or a mixture thereof.

2. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a specific cathode loading greater than about 2.9 grams per cubic centimeter of cathode volume (g/cm 3 ).

3. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a specific cathode loading from about 2.9 g/cm 3 to about 3.45 g/cm 3 .

4. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a specific cathode loading from about 3.10 g/cm 3 to about 3.25 g/cm 3 .

5. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a cathode loading of at least about 9.0 grams.

6. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a cathode loading from about 9.7 grams to about 11.5 grams.

7. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a cathode loading from about 9.7 grams to about 11.0 grams.

8. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a cathode loading from about 9.8 grams to about 11.2 grams.

9. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a cathode loading from about 9.9 grams to about 11.5 grams.

10. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a cathode loading from about 10.4 grams to about 11.5 grams.

11. The primary AA alkaline battery of claim 1 , the electrochemically active anode material comprises zinc, the zinc having an anode loading of at least about 3.3 grams of zinc.

12. The primary AA alkaline battery of claim 1 , the electrochemically active anode material comprises zinc, the zinc having an anode loading of at least about 4.0 grams of zinc.

13. The primary AA alkaline battery of claim 1 , the electrochemically active anode material comprises zinc, the zinc having an anode loading of at least about 4.3 grams of zinc.

14. The primary AA alkaline battery of claim 1 , the electrochemically active anode material comprises zinc, the zinc having an anode loading of at least about 4.6 grams of zinc.

15. The primary AA alkaline battery of claim 1 , the electrochemically active anode material comprises zinc, the zinc having an anode loading of at least about 5.0 grams of zinc.

16. The primary AA alkaline battery of claim 1 , the electrochemically active anode material comprises zinc, the zinc having an anode loading of at least about 5.5 grams of zinc.

17. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material further comprising electrolytic manganese dioxide.

18. The primary AA alkaline battery of claim 1 , the primary AA alkaline battery further comprising an integrated in-cell electronic resistance (R e ) at 22° C. of less than about 22 mΩ.

19. The primary AA alkaline battery of claim 1 , the primary AA alkaline battery further comprising an ohmic resistance (R t ) at 22° C. of less than about 57 mΩ.

20. The primary AA alkaline battery of claim 1 , the electrochemically active cathode material having a BET surface area from about 18 m 2 /g to about 28 m 2 /g.

21. The primary AA alkaline battery of claim 1 , the cathode comprising carbon particles, the carbon particles comprising from about 2.0 weight percent to about 10 weight percent of the cathode.

22. The primary AA alkaline battery of claim 1 , the separator having a density from about 1.30 g/cm 3 to about 1.40 g/cm 3 .

23. The primary AA alkaline battery of claim 1 , the electrochemically active anode material having a particle size from about 10 μm to about 300 μm.

24. The primary AA alkaline battery of claim 1 , the electrochemically active anode having a BET surface area from about 0.040 m 2 /g to about 0.060 m 2 /g.

25. The primary AA alkaline battery of claim 1 , wherein the integrated in-cell ionic resistance (R i ) at 22° C. is from about 20 mΩ to 36.5 mΩ.

26. The primary AA alkaline battery of claim 1 , the cathode having a cathode porosity from about 15% to about 45%.

27. The primary AA alkaline battery of claim 1 , the hydroxide comprising potassium hydroxide.

28. The primary AA alkaline battery of claim 1 , the hydroxide comprising from about 25% to about 40% on a weight basis of the total electrolyte within the battery.

29. The primary AA alkaline battery of claim 1 , the separator having a porosity greater than about 70%.

30. The primary AA alkaline battery according to claim 1 , wherein the electrochemically active anode material comprises zinc.

Assignees

• Duracell Us Operations Inc

Inventors

• Pozin Michael
• Derooy Brianna Rose
• Issaev Nikolai N

Classifications

• G01R31/389

  Measuring internal impedance, internal conductance or related variables · CPC title

• G01R31/382 Primary

  Arrangements for monitoring battery or accumulator variables, e.g. SoC · CPC title

• H01M6/04

  Cells with aqueous electrolyte · CPC title

• H01M4/42 Primary

  Alloys based on zinc · CPC title

• H01M4/50 Primary

  of manganese · CPC title