IP Library › Granted Patent US 7,045,253
Granted Patent B2
US 7,045,253 · App. 10/784,749 · Granted May 16, 2006

Zinc shapes for anodes of electrochemical cells

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Quick Facts
Patent No.
US 7,045,253
App. No.
10/784,749
Granted
May 16, 2006
Kind
B2
Abstract

An electrochemical cell 30 which contains both a cathode 32 and an anode 34. The anode contains a mixture of uniformly shaped particles 10 and electrolyte. The anode can also contain a zinc powder comprising non-uniform shaped, which can be mixed with the uniformly shaped particles of the present invention.

Claims (16)

1. An electrochemical cell comprising a non-mercury added zinc anode comprising uniformly shaped zinc particles having smooth surface finishes.

2. The electrochemical cell defined in claim 1 wherein said zinc particles comprise consistent porosity characteristics.

3. The electrochemical cell defined in claim 2 wherein said porosity is greater than 25 percent.

4. The electrochemical cell defined in claim 3 wherein said porosity is greater than 50 percent.

5. The electrochemical cell defined in claim 1 wherein said uniformly shaped zinc particles have a morphology selected from the group consisting of filament, donut, biscuit, tentacle, snake, corrugated, helix, dog bone, sponge, honeycomb, and foam.

6. The electrochemical cell defined in claim 1 wherein said uniformly shaped zinc particles have a tap density less than 2.5 g/cc.

7. The electrochemical cell defined in claim 1 wherein said uniformly shaped zinc particles have a tap density less than 2.0 g/cc.

8. The electrochemical cell defined in claim 1 wherein said uniformly shaped zinc particles have a tap density less than 1.5 g/cc.

9. The electrochemical cell defined in claim 1 wherein said uniformly shaped zinc particles have a tap density less than 1.3 g/cc.

10. The electrochemical cell defined in claim 1 wherein said anode has a zinc weight concentration less than 70 percent.

11. The electrochemical cell defined in claim 1 wherein said anode has a zinc weight concentration less than 68 percent.

12. The electrochemical cell defined in claim 1 wherein said anode has a zinc weight concentration less than 66 percent.

13. The electrochemical cell defined in claim 1 wherein said anode has a zinc weight concentration less than 64 percent.

14. The electrochemical cell defined in claim 1 wherein said anode has a zinc weight concentration less than 62 percent.

15. An electrochemical cell comprising a non-mercury added zinc anode comprising uniformly shaped zinc particles having consistent surface finishes and consistent porosity characteristics wherein said porosity is greater than 25 percent.

16. The electrochemical cell defined in claim 15 wherein said porosity is greater than 50 percent.

Assignments (6)
PATENT SECURITY AGREEMENT Recorded Dec 30, 2020
From: ENERGIZER BRANDS, LLC; ENERGIZER AUTO, INC.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 054875/0651 →
PATENT SECURITY AGREEMENT Recorded Jan 8, 2019
From: ENERGIZER HOLDINGS, INC.; AMERICAN COVERS, LLC; ASSOCIATED PRODUCTS, LLC; CALIFORNIA SCENTS, LLC; ENERGIZER BRANDS, LLC; ENERGIZER MANUFACTURING, INC.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 048029/0246 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENT RIGHTS Recorded Jan 8, 2019
From: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: ENERGIZER BRANDS, LLC
Reel/Frame 048888/0300 →
CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NUMBER 29/499,135 PREVIOUSLY RECORDED AT REEL: 036019 FRAME: 814. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Sep 16, 2016
From: EVEREADY BATTERY COMPANY
To: ENERGIZER BRANDS, LLC
Reel/Frame 040054/0660 →
SECURITY AGREEMENT Recorded Jul 15, 2015
From: ENERGIZER BRANDS, LLC
To: JPMORGAN CHASE BANK, N.A., AS AGENT
Reel/Frame 036106/0392 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 26, 2015
From: EVEREADY BATTERY COMPANY, INC.
To: ENERGIZER BRANDS, LLC
Reel/Frame 036019/0814 →