US4414293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parasitic corrosion resistant anode for use in metal/air or metal/O2 cells
Assignee: United States Department of Energy
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Filing: 1982-09-20
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Granted: 1983-11-08
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Expires: 2002-09-20
Abstract
Abstract A consumable metal anode which is used in refuelable electrochemical cells and wherein at least a peripheral edge portion of the anode is protected against a corrosive alkaline environment of the cell by the application of a thin metal coating, the coating being formed of metals such as nickel, silver, and gold.
Inventors
- 👤 Richard W. Joy
- 👤 David F. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:51
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M4/00; H01M4/02; H01M4/06; H01M4/08; H01M4/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A consumable anode for use in a corrosive environment of an electrochemical cell, said anode being in the form of a plate-like member having remote faces and a peripheral edge and being formed of a reactive metal, said anode being improved by a protective film of a corrosion inhibiting metal extending entirely over said peripheral edge and at least peripheral portions of said faces to prevent the peripheral edge from being adversely affected by the environment.
Claim 2
Dependent Claim
76 words
A consumable anode for use in a corrosive environment of an electrochemical cell, said anode being in the form of a plate-like member having remote faces and a peripheral edge and being formed of a reactive metal, said anode being improved by a protective film of a corrosion inhibiting metal extending entirely over said peripheral edge and at least peripheral portions of said faces to prevent the peripheral edge from being adversely affected by the environment.
Claim 3
Dependent Claim
21 words
An anode according to claim 1 wherein said corrosion inhibiting metal is selected from a group including gold, nickel and silver.
Claim 4
Dependent Claim
11 words
An anode according to claim 2 wherein said metal is nickel.
Claim 5
Dependent Claim
31 words
An anode according to claim 1 werein said anode is of a single cell type and one of said faces is inactive, and wherein said film completely covers said inactive face.
Claim 6
Dependent Claim
29 words
An anode according to claim 1 wherein said anode is of a dual cell type, and said corrosion inhibiting metal extends over peripheral portions of each of said faces.
Claim 7
Dependent Claim
21 words
An anode according to claim 1 wherein said anode is formed of material selected from the group of aluminum and lithium.
Claim 8
Dependent Claim
13 words
An anode according to claim 6 wherein said anode is formed of aluminum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |