Primary Alkaline Battery

Patent metadata

Field	Value
Publication number	US-2021057741-A1
Application number	US-202017087289-A
Country	US
Kind code	A1
Filing date	Nov 2, 2020
Priority date	Mar 12, 2010
Publication date	Feb 25, 2021
Grant date	—

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 method of making a primary alkaline battery comprising:
preparing a cathode material by a process comprising oxidizing an oxide including at least one transition metal and an alkali metal to increase the average oxidation state of the transition metal; incorporating the cathode material and one or more further cathode materials selected from the group consisting of acid-treated electrolytic manganese dioxide, acid-treated chemically-prepared manganese dioxide, λ-MnO2, layered cobalt oxide, layered manganese oxide, and combinations thereof into a cathode; incorporating the cathode into the battery; incorporating an anode into the battery; and incorporating an aqueous alkaline electrolyte into the battery.

2 . The method of claim 1 , wherein the anode includes zinc or a zinc alloy.

3 . The method of claim 1 , wherein the battery includes a separator between the cathode and the anode.

4 . The method of claim 1 , wherein the transition metal comprises nickel, manganese, cobalt, or a combination thereof.

5 . The method of claim 1 , wherein the alkali metal comprises lithium.

6 . The method of claim 1 , wherein preparing the cathode material further comprises washing with water.

7 . The method of claim 1 , wherein the transition metal comprises nickel and the alkali metal comprises lithium.

8 . The method of claim 1 , wherein the increase in the average oxidation state of the transition metal is in the range of at least about 0.1 to about 0.5.

9 . The method of claim 1 , wherein the increase in the average oxidation state of the transition metal is at least about 0.5.

10 . A method of making a primary alkaline battery comprising:
preparing a cathode material by a process comprising oxidatively delithiating a lithium nickelate; incorporating the cathode material and one or more further cathode materials selected from the group consisting of acid-treated electrolytic manganese dioxide, acid-treated chemically-prepared manganese dioxide, λ-MnO2, layered cobalt oxide, layered manganese oxide, and combinations thereof into a cathode; incorporating the cathode into the battery; incorporating an anode into the battery; and incorporating an aqueous alkaline electrolyte into the battery.

11 . The method of claim 10 , wherein the anode includes zinc or a zinc alloy.

12 . The method of claim 10 , wherein the battery includes a separator between the cathode and the anode.

13 . The method of claim 10 , wherein the lithium nickelate has a layered structure.

14 . The method of claim 10 , wherein preparing the cathode material further comprises washing with water.

15 . The method of claim 10 , wherein the increase in the average oxidation state of the transition metal is in the range of at least about 0.1 to about 0.5.

16 . The method of claim 10 , wherein the increase in the average oxidation state of the transition metal is at least about 0.5.

Assignees

• Duracell Us Operations Inc

Inventors

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

Classifications

• H01M4/362

  Composites · CPC title

• H01M4/525

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title

• H01M4/06

  Electrodes for primary cells · CPC title

• H01M4/42

  Alloys based on zinc · CPC title

• H01M4/08

  Processes of manufacture · CPC title