US4016091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing high capacity nickel electrode powder
Assignee: Westinghouse Electric Corp
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Filing: 1975-10-30
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Granted: 1977-04-05
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Expires: 1995-10-30
Abstract
Abstract An electrode plate is made by loading a supporting porous metallic plaque with active battery material made by: (1) hydrolyzing the reaction product of a starting material comprising an admixture of Ni oxide and effective amounts of sodium peroxide fused at temperatures between about 800°-1150° C, the hydrolyzed solid reaction product containing electrochemically active Ni hydrated oxides and hydroxide forms, (2) if desirable, drying the product below about 65° C, and (3) adding, at some step in the method, an amount of cobalt containing additive effective to provide about 2-12 wt% total Co in the active battery material based on Ni oxide plus Co content.
Inventors
- 👤 John F. Jackovitz
- 👤 Earl A. Pantier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
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
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
A method of making an active battery electrode powder, comprising the steps of: a. mixing an admixture of NiO and Na 2 O 2 , wherein the weight ratio of NiO: Na 2 O 2 is between about 1:1.35 to about 1:2.1; b. heating the admixture at a reaction temperature of between about 800°-1150° C, for about 1/2 hour to 8 hours to melt the admixture and form a reaction product comprising NaNiO 2 ; c. hydrolyzing the reaction product comprising NaNiO 2 in water at between 20°-95° C, forming a battery material comprising Ni hydroxide forms and then washing the battery material; and d. maintaining the activity of the battery material by maintaining the temperature of the material below about 65° C.
Claim 2
Independent Claim
123 words
A method of making an active battery electrode powder, comprising the steps of: a. mixing an admixture of NiO and Na 2 O 2 , wherein the weight ratio of NiO: Na 2 O 2 is between about 1:1.35 to about 1:2.1; b. heating the admixture at a reaction temperature of between about 800°-1150° C, for about 1/2 hour to 8 hours to melt the admixture and form a reaction product comprising NaNiO 2 ; c. hydrolyzing the reaction product comprising NaNiO 2 in water at between 20°-95° C, forming a battery material comprising Ni hydroxide forms and then washing the battery material; and d. maintaining the activity of the battery material by maintaining the temperature of the material below about 65° C.
Claim 3
Dependent Claim
69 words
The method of claim 1 wherein cobalt additive selected from the group of Co, Co 2 O 3 , Co 3 O 4 and CoO and their mixtures is mixed with the NiO and Na 2 O 2 in step (a) providing a battery material with about 2-12 wt% Co based on NiO plus Co content and the battery material is dried between about 15°-65° C in step (d).
Claim 4
Dependent Claim
21 words
The method of claim 2 wherein the nickel oxide, cobalt additive and Na 2 O 2 are in substantially pure form.
Claim 5
Dependent Claim
37 words
The method of claim 2 wherein the Ni hydroxide forms comprise a material having a stoichiometry of Ni 3 O 4 . 2H.sub. 2 O, said material after drying being in crystalline layer form with interlaminar water.
Claim 6
Dependent Claim
31 words
The method of claim 4 wherein the crystalline structure of the material after drying has a center of symmetry and layer like --O--Ni--O--Ni--O--Ni--O-- structure with water molecules dispersed in interlaminar positions.
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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |