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US4462875A
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Preparation of nickel-oxide hydroxide electrode
Assignee: Dow Chemical Co
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Filing: 1983-12-12
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Granted: 1984-07-31
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Expires: 2003-12-12
Abstract
Abstract A nickel-oxide hydroxide electrode is prepared by galvanostatic cycling of a nickel metal in contact with a basic electrolyte under electrochemical conditions.
Inventors
- 👤 Kenneth J. Stutts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/32; C; C25; C25D; C25D9/00; C25D9/04; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
40 words
A process for preparing a nickel-oxide hydroxide electrode comprising (1) contacting a nickel metal with a basic electrolyte under electrochemical conditions, and (2) electrolyzing the nickel metal by galvanostatic cycling so as to prepare a surface coating comprising nickel-oxide hydroxide.
Claim 2
Dependent Claim
40 words
A process for preparing a nickel-oxide hydroxide electrode comprising (1) contacting a nickel metal with a basic electrolyte under electrochemical conditions, and (2) electrolyzing the nickel metal by galvanostatic cycling so as to prepare a surface coating comprising nickel-oxide hydroxide.
Claim 3
Dependent Claim
15 words
A process according to claim 1 wherein the basic electrolyte comprises aqueous alkali metal hydroxide.
Claim 4
Dependent Claim
31 words
A process according to claim 1 wherein the nickel metal is electrolyzed by galvanostatic cycling at a current density of from about 5 mA/cm 2 to about 100 mA/cm 2 .
Claim 5
Dependent Claim
25 words
A process according to claim 1 wherein the galvanostatic cycling is at a current from about 25 mA/cm 2 to about 75 mA/cm 2 .
Claim 6
Dependent Claim
41 words
A process according to claim 3 wherein the nickel metal is repeatedly anodically charged for from about 1 to about 20 seconds then cathodically charged for about one to about 20 seconds for a total time period of about 10 minutes.
Claim 7
Dependent Claim
25 words
A process according to claim 5 wherein after galvanostatic cycling the nickel metal is anodically charged for from about 1 minute to about 10 minutes.
Claim 8
Dependent Claim
22 words
A process according to claim 1 wherein the surface coating on the nickel metal is at least about 100 monolayer equivalents thick.
Claim 9
Dependent Claim
22 words
A process according to claim 7 wherein the surface coating on the nickel metal is at least about 150 monolayer equivalents thick.
Claim 10
Dependent Claim
12 words
A nickel-oxide hydroxide electrode prepared according to the process of claim 1.
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) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |