IP Library › Granted Patent US 12,537,204
Granted Patent B2
US 12,537,204 · App. 18/057,639 · Granted Jan 27, 2026

Hybrid material anode current collector for alkaline batteries

Inventors: John Hadley (Madison, WI); Matthew Hennek (Stoughton, WI); Dustin Breister (Madison, WI)
Assignee: Energizer Brands, LLC
H01M4/667H01M4/24H01M4/662H01M4/75H01M4/76H01M4/78H01M2004/027H01M2004/028
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Quick Facts
Patent No.
US 12,537,204
App. No.
18/057,639
Granted
Jan 27, 2026
Kind
B2
Abstract

Systems, apparatuses, and/or the like are provided. In some embodiments, an electrochemical cell may include a container, a ring-shaped cathode disposed within the container, wherein the ring-shaped cathode defines an open interior, an anode disposed within the open interior of the ring-shaped cathode, a separator disposed between the cathode and the anode, an electrolyte solution, and a current collector electrically connected with a portion of the container, wherein the current collector is positioned at least partially within the anode. For example, current collectors may include a base including a first material that is fixedly attached to the portion of the container and a zinc component composed of a second material and fixedly attached to the base.

Claims (28)

1 . An electrochemical cell comprising:

a container,

a ring-shaped cathode disposed within the container, wherein the ring-shaped cathode defines an open interior;

an anode disposed within the open interior of the ring-shaped cathode;

a separator disposed between the ring-shaped cathode and the anode;

an electrolyte solution; and

a current collector electrically connected with a portion of the container, wherein the current collector is positioned at least partially within the anode, and wherein the current collector comprises:

a base comprising a first material and fixedly attached to the portion of the container, wherein the base defines at least a portion of an exterior surface of the current collector; and

a zinc component comprising a second material, wherein the zinc component is fixedly attached to the base and is in contact with the anode.

2 . The electrochemical cell of claim 1 , wherein the zinc component comprises one or more pieces of zinc foil that are fixedly attached at one or more points on the base of the current collector.

3 . The electrochemical cell of claim 1 , wherein the zinc component is one of: welded, soldered, friction fit, or crimped to the base.

4 . The electrochemical cell of claim 3 , wherein the zinc component is welded to the base by a welding method selected from a group consisting of: ultrasonic welding, electric welding, and friction welding.

5 . The electrochemical cell of claim 1 , wherein the zinc component is fixedly attached to the base such that at least a surface area of the base is encased within the zinc component.

6 . The electrochemical cell of claim 5 , wherein the base is cylindrically shaped, and wherein the surface area of the base that is encased within the zinc component is greater than a surface area of the base that is not encased within the zinc component.

7 . The electrochemical cell of claim 6 , wherein the surface area of the base that is encased within the zinc component forms a cylinder with a diameter larger in diameter than a cylinder formed by the surface area of the base that is not encased within the zinc component.

8 . The electrochemical cell of claim 1 , wherein the zinc component comprises one or more zinc plates that are fixedly attached at one or more locations on the base.

9 . The electrochemical cell of claim 1 , wherein the first material comprises a brass alloy.

10 . The electrochemical cell of claim 1 , wherein the anode comprises a first portion and a second portion, wherein the first portion comprises a first anode material and the second portion comprises a second anode material.

11 . The electrochemical cell of claim 1 , wherein the base ranges from about 20 mm to about 40 mm in length.

12 . The electrochemical cell of claim 1 , wherein a design of the ring-shaped cathode and the anode utilizes a high zinc loading design of about 62% to 72% by weight.

13 . A current collector electrically connected with a portion of a container, wherein the current collector is positioned at least partially within an anode, and wherein the current collector comprises:

a base fixedly attached to the portion of the container, wherein the base defines at least a portion of an exterior surface of the current collector; and

a zinc component comprising a second material, wherein the zinc component is fixedly attached to the base and defines at least a second portion of the exterior surface of the current collector.

14 . The current collector of claim 13 , wherein the zinc component comprises one or more pieces of zinc foil that are fixedly attached at one or more points on the base.

15 . The current collector of claim 13 , wherein the zinc component is one of: welded, soldered, friction fit, or crimped to the base.

16 . The current collector of claim 13 , wherein the zinc component is welded to the base by a welding method selected from a group consisting of: ultrasonic welding, electric welding, and friction welding.

17 . The current collector of claim 13 , wherein the zinc component is fixedly attached to the base such that at least a surface area of the base is encased within the zinc component.

18 . The current collector of claim 17 , wherein the base is cylindrically shaped, and wherein the surface area of the base that is encased within the zinc component is greater than a surface area of the base that is not encased within the zinc component.

Assignments (2)
AMENDED AND RESTATED INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Mar 19, 2025
From: ENERGIZER BRANDS, LLC; ENERGIZER AUTO, INC.,; ENERGIZER AUTO SALES, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 070565/0282 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 21, 2022
From: HADLEY, JOHN; HENNEK, MATTHEW; BREISTER, DUSTIN
To: ENERGIZER BRANDS, LLC
Reel/Frame 061845/0563 →
Continuity (1)
Related Publication 20240170677A1 · May 23, 2024
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