US3167457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a nickel fuel cell electrode
Assignee: National Research Development Corp UK
•
Filing: 1962-02-21
•
Granted: 1965-01-26
•
Expires: 1982-02-21
Abstract
No abstract record available.
Inventors
- 👤 Bacon Francis Thomas
- 👤 Jones Paul William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:06
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8878; H01M4/8882; H01M4/8825; H01M4/8846; H01M4/885; H01M4/8892; H01M2004/8678; H01M2004/8689; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
162 words
A METHOD OF FORMING POROUS NICKEL ELECTRODES FOR USE IN FUEL CELLS OF THE HYDROGEN-OXYGEN TYPE WHICH COMPRISES: (A) PROVIDING AN ELECTRODE HAVING A POROUS SURFACE FORMED OF SINTERED NICKEL POWDER, (B) IMPREGNATING THE POROUS SURFACE OF SAID ELECTRODE WITH A SOLUTION CONSISTING ESSENTIALLY OF LITHIUM NITRATE AND NICKEL NITRATE DISSOLVED IN WATER, (C) DRYING THE SOLUTION IMPREGNATED ELECTRODE, (D) COOLING THE DRIED ELECTRODE, (E) OXIDIZING THE IMPREGNATED ELECTRODE SURFACE BY HEATING THE ELECTRODE IN AIR FOR ABOUT ONE HOUR AT ABOUT 500 TO 700*C., (F) COOLING THE RESULTING OXIDIZED ELECTRODE, (G) IMPREGNATING THE COOLED ELECTRODE WITH A SOLUTION CONSISTING ESSENTIALLY OF LITHIUM NITRATE AND NICKEL NITRATE CONTAINING ABOUT ONE-HALF THE SALT CONCENTRATION OF THE SOLUTION OF STEP (B), (H) DRYING THE IMPREGNATED ELECTRODE, AND (I) OXIDIZING THE DRIED ELECTRODE BY HEATING IN AIR AT ABOUT 350 TO 450*C. FOR ABOUT ONE-HALF HOUR TO PRODUCE AN ELECTRODE OF IMPROVED ACTIVITY AS COMPARED TO AN ELECTRODE NO SUBJECTED TO STEPS (G) THROUGH (I).
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) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |