Patent US4364422A successfully refreshed from Google Patents.
US4364422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a nickel electrode
Assignee: ZF International UK Ltd
•
Filing: 1980-09-29
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Granted: 1982-12-21
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Expires: 2000-09-29
Abstract
Abstract A method of producing a nickel electrode comprising a current collector and active material pressed into physical and electrical contact with the current collector. The active material comprises nickel hydroxide, an organic binder, a conductive diluent and a cobalt compound, the cobalt compound having been precipitated from a cobalt-containing solution in contact with the already-formed nickel hydroxide.
Inventors
- 👤 David J. Brown
- 👤 Michael Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:31
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/32; H01M4/36; H01M4/48; H01M4/52; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
77 words
A method of producing a pressed nickel electrode comprising the sequential steps of: (a) contacting nickel hydroxide powder with a solution containing cobalt ions and precipitating a cobalt compound from said solution onto the nickel hydroxide powder, (b) mixing the nickel hydroxide powder containing said precipitated cobalt compound with a powdered conductive diluent and a powdered binder to form a resultant mixture, and (c) pressing the resultant mixture into physical and electrical contact with a current collector.
Claim 2
Independent Claim
77 words
A method of producing a pressed nickel electrode comprising the sequential steps of: (a) contacting nickel hydroxide powder with a solution containing cobalt ions and precipitating a cobalt compound from said solution onto the nickel hydroxide powder, (b) mixing the nickel hydroxide powder containing said precipitated cobalt compound with a powdered conductive diluent and a powdered binder to form a resultant mixture, and (c) pressing the resultant mixture into physical and electrical contact with a current collector.
Claim 3
Independent Claim
72 words
A method of producing a pressed nickel electrode comprising the sequential steps of: (a) mixing nicle hydroxide powder with a powdered conductive diluent and a powdered binder to form a resultant mixture, (b) pressing the resultant mixture into physical and electrical contact with a current collector, and (c) contacting said pressed resultant mixture with a solution containing cobalt ions and precipitating a cobalt compound from said solution onto said pressed resultant mixture.
Claim 4
Independent Claim
72 words
A method of producing a pressed nickel electrode comprising the sequential steps of: (a) mixing nicle hydroxide powder with a powdered conductive diluent and a powdered binder to form a resultant mixture, (b) pressing the resultant mixture into physical and electrical contact with a current collector, and (c) contacting said pressed resultant mixture with a solution containing cobalt ions and precipitating a cobalt compound from said solution onto said pressed resultant mixture.
Claim 5
Independent Claim
73 words
A method of producing a pressed nickel electrode comprising the sequential steps of: (a) mixing nickel hydroxide powder with a powdered conductive diluent and a powdered binder to form a resultant mixture, (b) contacting said resultant mixture with a solution containing cobalt ions and precipitating a cobalt compound from said solution onto said resultant mixture, and (c) pressing said resultant mixture of step (b) into physical and electrical contact with a current collector.
Claim 6
Independent Claim
73 words
A method of producing a pressed nickel electrode comprising the sequential steps of: (a) mixing nickel hydroxide powder with a powdered conductive diluent and a powdered binder to form a resultant mixture, (b) contacting said resultant mixture with a solution containing cobalt ions and precipitating a cobalt compound from said solution onto said resultant mixture, and (c) pressing said resultant mixture of step (b) into physical and electrical contact with a current collector.
Claim 7
Independent Claim
52 words
A method as claimed in any one of claims 1, 2 or 3, wherein weight of the cobalt metal present in the cobalt containing resultant mixture or the cobalt containing pressed resultant mixture is less than or equal to 3% of the total weight of the nickel hydroxide and the cobalt compound.
Claim 8
Independent Claim
49 words
A method as claimed in any one of claims 1, 2 or 3, wherein weight of the cobalt metal present in the cobalt containing resultant mixture or the cobalt containing pressed resultant mixture is between 1 and 2% of the total weight of nickel hydroxide and the cobalt compound.
Claim 9
Independent Claim
22 words
A method as claimed in any one of claims 1, 2 or 3, wherein the binder is an organic binder comprising polytetrafluoroethylene.
Claim 10
Dependent Claim
27 words
A method as claimed in claim 6, wherein the polytetrafluoroethylene comprises 1 wt % of the cobalt containing resultant mixture or the cobalt containing pressed resultant mixture.
Claim 11
Dependent Claim
13 words
A method as claimed in claim 1, wherein the conductive diluent is graphite.
Claim 12
Dependent Claim
27 words
A method as claimed in claim 8, wherein the graphite comprises 24 wt % of the cobalt containing resultant mixture or the cobalt containing pressed resultant mixture.
Claim 13
Independent Claim
52 words
A method as claimed in any one of claims 1, 2 or 3, wherein the cobalt containing resultant mixture of the cobalt containing pressed resultant mixture consists of 75 wt % of a conbination of nickel hydroxide and the cobalt compound, 24 wt % of graphite, and 1 wt % of polytetrafluoroethylene.
Claim 14
Dependent Claim
29 words
A method as claimed in claim 10, wherein the combination of nickel hydroxide and the cobalt compound contains 58 wt % of nickel and 1 wt % of cobalt.
Claim 15
Independent Claim
37 words
A method as claimed in any one of claims 1, 2 or 3, wherein the cobalt compound is precipitated from said solution by adding thereto ions selected from the group consisting of hydroxyl ions and carbonate ions.
Claim 16
Dependent Claim
32 words
A method as claimed in claim 1, further comprising the step of removing excess of said solution containing cobalt ions from said nickel hydroxide powder prior to precipitation of said cobalt compound.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |