Primary alkaline battery

Patent metadata

Field	Value
Publication number	US-10232520-B2
Application number	US-201615136847-A
Country	US
Kind code	B2
Filing date	Apr 22, 2016
Priority date	Mar 12, 2010
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

A primary battery includes a cathode having a non-stoichiometric metal oxide including transition metals Ni, Mn, Co, or a combination of metal atoms, an alkali metal, and hydrogen; an anode; a separator between the cathode and the anode; and an alkaline electrolyte.

First claim

What is claimed is:

1. A cathode comprising a composite of Li 1−x H y NiO 2 and one or more cathode active materials selected from the group consisting of acid-treated electrolytic manganese dioxide, acid-treated chemically-prepared manganese dioxide, λ-MnO 2 , layered cobalt oxide, layered manganese oxide, and combinations thereof, wherein x is greater than 0 and less than 1 and y is less than or equal to x.

2. The cathode of claim 1 , wherein the values for x and y in Li 1−x H y NiO 2 independently range from 0.1 to 0.9.

3. The cathode of claim 1 , wherein the layered cobalt oxide is a partially delithiated layered lithium cobalt oxide.

4. The cathode of claim 1 , wherein the layered manganese oxide is a partially delithiated layered lithium manganese oxide.

5. The cathode of claim 1 , wherein the λ-MnO 2 is a partially delithiated spinel-type lithium manganese oxide.

6. The cathode of claim 1 , wherein the composite comprises acid treated electrolytic manganese dioxide and a weight ratio of the Li 1−x H y NiO 2 to the acid-treated electrolytic manganese oxide weight ratio is 19:1 or less.

7. A battery comprising the cathode of claim 1 , an anode including zinc or zinc alloy particles, an alkaline electrolyte solution, and a separator.

8. A battery comprising the cathode of claim 1 , an anode, a separator between the cathode and the anode, and an alkaline electrolyte.

9. The cathode of claim 1 , wherein Ni has an average oxidation state of at least 0.3 greater than the average oxidation state of Ni in LiNiO 2 .

10. The cathode of claim 1 , wherein a Ni content of the Li 1−x H y NiO 2 comprises at least one atomic percent of Ni having a nominally tetravalent oxidation state.

11. The cathode of claim 1 , wherein a Ni content of the Li 1−x H y NiO 2 comprises at most ninety atomic percent of Ni having a nominally trivalent oxidation state.

12. The cathode of claim 1 , wherein the composite comprises acid treated electrolytic manganese dioxide and a weight ratio of the Li 1−x H y NiO 2 to the acid -treated electrolytic manganese oxide weight ratio is 1:9 or more.

13. A cathode comprising a composite of Li 1−x H y NiO 2 and one or more cathode active materials selected from the group consisting of acid-treated electrolytic manganese dioxide, acid-treated chemically-prepared manganese dioxide, λ-MnO 2 , layered cobalt oxide, layered manganese oxide, and combinations thereof, wherein the values for x and y in Li 1−x H y NiO 2 independently range from 0.1 to 0.9.

14. The cathode of claim 13 , wherein the composite comprises layered cobalt oxide and the layered cobalt is a partially delithiated layered lithium cobalt oxide.

15. The cathode of claim 13 , wherein the composite comprises layered manganese oxide and the layered manganese oxide is a partially delithiated layered lithium manganese oxide.

16. The cathode of claim 13 , wherein the composite comprises λ-MnO 2 and the λ-MnO 2 is a partially delithiated spinel-type lithium manganese oxide.

17. The cathode of claim 13 , wherein the composite comprises acid treated electrolytic manganese dioxide and a weight ratio of the Li 1−x H y NiO 2 to the acid-treated electrolytic manganese oxide weight is 19:1 or less.

18. The cathode of claim 17 , wherein the composite comprises acid treated electrolytic manganese dioxide and a weight ratio of the Li 1−x H y NiO 2 to the acid-treated electrolytic manganese oxide weight is 1:9 or more.

19. A battery comprising the cathode of claim 13 , an anode including zinc or zinc alloy particles, an alkaline electrolyte solution, and a separator.

20. A battery comprising the cathode of claim 13 , an anode, a separator between the cathode and the anode, and an alkaline electrolyte.

21. The cathode of claim 13 , wherein Ni has an average oxidation state of at least 0.3 greater than the average oxidation state of Ni in LiNiO 2 .

22. The cathode of claim 13 , wherein a Ni content of the Li 1−x H y NiO 2 comprises at least one atomic percent of Ni having a nominally tetravalent oxidation state.

23. The cathode of claim 13 , wherein a Ni content of the Li 1−x H y NiO 2 comprises at most ninety atomic percent of Ni having a nominally trivalent oxidation state.

Assignees

• Duracell Us Operations Inc

Inventors

• Christian Paul Albert
• Wang Yichun
• Iltchev Nikolay Krastev
• Nanjundaswamy Kirakodu S
• Nelson Jennifer Anne
• Zhang Fan

Classifications

• B26B21/14

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• H01M4/06

  Electrodes for primary cells · CPC title

• H01M4/366

  as layered products · CPC title

• Y10T29/49115

  including coating or impregnating · CPC title

• H01M6/04

  Cells with aqueous electrolyte · CPC title