US4659379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel anode electrode
Assignee: United States Department of Energy
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Filing: 1985-04-16
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Granted: 1987-04-21
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Expires: 2005-04-16
Abstract
Abstract A nickel anode electrode fabricated by oxidizing a nickel alloying material to produce a material whose exterior contains nickel oxide and whose interior contains nickel metal throughout which is dispersed the oxide of the alloying material and by reducing and sintering the oxidized material to form a product having a nickel metal exterior and an interior containing nickel metal throughout which is dispersed the oxide of the alloying material.
Inventors
- 👤 Prabhakar Singh
- 👤 Mark Benedict
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:24
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/14; H01M8/141; C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/10; C23C8/12; C23C8/80; H01M4/00; H01M4/86; H01M4/88; H01M4/8878; H01M4/8882; H01M4/8885; H01M4/8892; H01M4/90; H01M4/9041; H01M2004/8678; H01M2004/8684; H01M2008/147; H01M2300/00; H01M2300/0017; H01M2300/0048; H01M2300/0051; H01M4/8647; H01M4/8652; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50; Y10; Y10S; Y10S75/00; Y10S75/95; Y10S75/951
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
105 words
A method of producing a nickel anode electrode comprising the steps of: oxidizing a nickel alloy material in particle form to produce in its exterior nickel oxide and in its interior nickel metal throughout which is dispersed an oxide of the alloying material; compacting said nickel alloy particles to form a porous cohesive structure, and simultaneously reducing and sintering said compact of said oxidized nickel alloy material to produce nickel metal in the material exterior, whereby a sintered porous anode component is formed having nickel metal in its exterior and in its interior nickel metal throughout which is dispersed an oxide of the alloying material.
Claim 2
Independent Claim
105 words
A method of producing a nickel anode electrode comprising the steps of: oxidizing a nickel alloy material in particle form to produce in its exterior nickel oxide and in its interior nickel metal throughout which is dispersed an oxide of the alloying material; compacting said nickel alloy particles to form a porous cohesive structure, and simultaneously reducing and sintering said compact of said oxidized nickel alloy material to produce nickel metal in the material exterior, whereby a sintered porous anode component is formed having nickel metal in its exterior and in its interior nickel metal throughout which is dispersed an oxide of the alloying material.
Claim 3
Dependent Claim
57 words
A method in accordance with claim 1 wherein: said oxidation is carried out in an atmosphere containing oxygen at a temperature in a range from about 700, to 1,000 degrees centigrade; and said reduction is carried out in an atmosphere containing hydrogen and/or carbon monoxide at a temperature in a range of 600 to 1,000 degrees centigrade.
Claim 4
Dependent Claim
46 words
A method in accordance with claim 2 wherein: said oxidation is carried out over a period of time in the range from about one to ten hours; and said reduction in carried out over a period of time in the range from one-half to two hours.
Claim 5
Dependent Claim
26 words
A method in accordance with claim 1 wherein: said alloying material is selected form the group consisting of aluminum, yttrium, magnesium, titanium, tantalum, molybdenum and cerium.
Claim 6
Dependent Claim
24 words
A method in accordance with claim 1 wherein: said compacting occurs one of: before said oxidizing; and after said oxidizing and before said reduction.
Claim 7
Dependent Claim
27 words
A method in accordance with claim 1 wherein: the size of said particles is in the range of 3 to 10 micrometers at the time of reduction.
Claim 8
Dependent Claim
17 words
A method in accordance with claim 1 further comprising: impregnating the material with ceramic particles after reduction.
Claim 9
Dependent Claim
14 words
A method in accordance with claim 7 wherein: said ceramic is LiAlO 2 .
Claim 10
Dependent Claim
26 words
A method in accordance with claim 1 wherein: said oxidation results in an oxide of said alloying material being uniformly dispersed throughout said nickel metal interior.
Claim 11
Dependent Claim
27 words
A method in accordance with claim 1 wherein: said step of oxidizing is under conditions wherein oxidation of nickel and oxidation of the alloying material occur simultaneously.
Claim 12
Dependent Claim
31 words
A method in accordance with claim 1 wherein: said oxidizing step is carried out under conditions wherein said alloying material is first oxidized to completion and thereafter said nickel is oxidized.
Claim 13
Dependent Claim
64 words
A method in accordance with claim 1 wherein: said oxidizing step includes: a first oxidation under conditions which cause oxidation of said alloying material only; a second oxidation subsequent to said first oxidation under conditions to cause oxidation of said nickel; and said method further includes: subjecting said material after said first oxidation and prior to said second oxidation to a material dimunition step.
Claim 14
Dependent Claim
15 words
A method in accordance with claim 12 wherein: said dimunition steps includes milling said material.
Claim 15
Dependent Claim
25 words
A method in accordance with claim 1 wherein: the nickel oxide exterior comprises a layer of thickness equal to or less than about 5 micrometers.
Claim 16
Dependent Claim
14 words
A method in accordance with claim 14 wherein: said layer is a partial layer.
Claim 17
Dependent Claim
23 words
A method in accordance with claim 1 further comprising: precipitating a lithium salt onto said sintered material; heating said material after said precipation.
Claim 18
Dependent Claim
10 words
An anode electrode made by the method of claim 1.
Claim 19
Dependent Claim
10 words
An anode electrode made by the method of claim 3.
Claim 20
Dependent Claim
10 words
An anode electrode made by the method of claim 4.
Claim 21
Dependent Claim
10 words
An anode electrode made by the method of claim 10.
Claim 22
Dependent Claim
10 words
An anode electrode made by the method of claim 11.
Claim 23
Dependent Claim
10 words
An anode electrode made by the method of claim 12.
Claim 24
Dependent Claim
10 words
An anode electrode made by the method of claim 14.
References Cited (Backward Citations)
US4077816A
Cited
US4247604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |