US3928068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Active electrode composition and electrode
Assignee: Westinghouse Electric Corp
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Filing: 1974-05-20
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Granted: 1975-12-23
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Expires: 1994-05-20
Abstract
Abstract A composition is prepared which includes (1) basic nickel carbonate and (2) CoCO3, Co(OH)2, hydrates thereof, or mixtures thereof, where the number of cobalt atoms is about 2 to about 10% of the number of nickel atoms. The composition is slurried with water and an oxidant such as hypochlorite ion is added. The oxidant oxidizes the divalent nickel and cobalt ions to hydrates of NiO2 and CoO2, respectively. The solids are collected, washed, dried, and ground to a powder. The powder is mixed with water to form a paste which is applied to a porous conducting plaque to form an electrode.
Inventors
- 👤 John F Jackovitz
- 👤 Earl A Pantier
- 👤 Christopher K Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:41
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/52; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
19 words
A HYDRATED MIXTURE OF NICKELOUS CARBONATE AND NICKELOUS HYDROXIDE IN A MOLAR RATIO OF ABOUT 0.5 TO ABOUT 1.5;
Claim 2
Dependent Claim
19 words
A HYDRATED MIXTURE OF NICKELOUS CARBONATE AND NICKELOUS HYDROXIDE IN A MOLAR RATIO OF ABOUT 0.5 TO ABOUT 1.5;
Claim 3
Dependent Claim
62 words
A COMPOSITION COMPRISING: A. A HYDRATED MIXTURE OF NICKELOUS CARBONATE AND NICKELOUS HYDROXIDE IN A MOLAR RATIO OF ABOUT 0.5 TO ABOUT 1.5; AND B. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COCO3, CO(OH)2, HYDRATES THEREOF, AND MIXTURES THEREOF, WHEREIN THE NUMBER OF COBALT ATOMS IN SAID COMPOSITION IS ABOUT 2 TO ABOUT 10 PERCENT OF THE NUMBER OF NICKEL ATOMS;
Claim 4
Dependent Claim
62 words
A COMPOSITION COMPRISING: A. A HYDRATED MIXTURE OF NICKELOUS CARBONATE AND NICKELOUS HYDROXIDE IN A MOLAR RATIO OF ABOUT 0.5 TO ABOUT 1.5; AND B. A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COCO3, CO(OH)2, HYDRATES THEREOF, AND MIXTURES THEREOF, WHEREIN THE NUMBER OF COBALT ATOMS IN SAID COMPOSITION IS ABOUT 2 TO ABOUT 10 PERCENT OF THE NUMBER OF NICKEL ATOMS;
Claim 5
Dependent Claim
37 words
a compound selected from the group consisting of CoO3, Co(OH)2, hydrates thereof, and mixtures thereof, where the number of cobalt atoms in the composition is about 2 to about 10 percent of the number of nickel atoms;
Claim 6
Dependent Claim
37 words
a compound selected from the group consisting of CoO3, Co(OH)2, hydrates thereof, and mixtures thereof, where the number of cobalt atoms in the composition is about 2 to about 10 percent of the number of nickel atoms;
Claim 7
Dependent Claim
37 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COO3, CO(OH)2, HYDRATES THEREOF, AND MIXTURES THEREOF, WHERE THE NUMBER OF COBALT ATOMS IN THE COMPOSITION IS ABOUT 2 TO ABOUT 10 PERCENT OF THE NUMBER OF NICKEL ATOMS;
Claim 8
Dependent Claim
37 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COO3, CO(OH)2, HYDRATES THEREOF, AND MIXTURES THEREOF, WHERE THE NUMBER OF COBALT ATOMS IN THE COMPOSITION IS ABOUT 2 TO ABOUT 10 PERCENT OF THE NUMBER OF NICKEL ATOMS;
Claim 9
Dependent Claim
28 words
A composition according to claim 1 wherein the number of cobalt atoms in said composition is about 3 to about 7 percent of the number of nickel atoms.
Claim 10
Dependent Claim
32 words
a compound selected from the group consisting of CoCO3, Co(OH)2, hydrates thereof and mixtures thereof; and B. about 65 to about 75 percent of a compound selected from the group consisting of
Claim 11
Dependent Claim
32 words
a compound selected from the group consisting of CoCO3, Co(OH)2, hydrates thereof and mixtures thereof; and B. about 65 to about 75 percent of a compound selected from the group consisting of
Claim 12
Dependent Claim
32 words
a compound selected from the group consisting of CoCO3, (OH)2, hydrates thereof, and mixtures thereof; and B. about 30 to about 75 percent of a compound selected from the group consisting of
Claim 13
Dependent Claim
32 words
a compound selected from the group consisting of CoCO3, (OH)2, hydrates thereof, and mixtures thereof; and B. about 30 to about 75 percent of a compound selected from the group consisting of
Claim 14
Dependent Claim
19 words
A composition comprising: A. about 25 to about 70 percent of a compound selected from the group consisting of
Claim 15
Dependent Claim
19 words
A composition comprising: A. about 25 to about 70 percent of a compound selected from the group consisting of
Claim 16
Dependent Claim
7 words
SUFFICIENT WATER TO FORM A SLURRY; AND
Claim 17
Dependent Claim
7 words
SUFFICIENT WATER TO FORM A SLURRY; AND
Claim 18
Dependent Claim
7 words
sufficient water to form a slurry; and
Claim 19
Dependent Claim
7 words
sufficient water to form a slurry; and
Claim 20
Dependent Claim
55 words
a suitable oxidant in an amount sufficient to oxidize about 30 to about 75 percent of the nickel and cobalt atoms to a quadrivalent state; B. permitting said oxidant to oxidize about 30 to about 75 percent of the nickel and cobalt atoms to a quadrivalent state; and C. separating the solids from said water.
Claim 21
Dependent Claim
55 words
a suitable oxidant in an amount sufficient to oxidize about 30 to about 75 percent of the nickel and cobalt atoms to a quadrivalent state; B. permitting said oxidant to oxidize about 30 to about 75 percent of the nickel and cobalt atoms to a quadrivalent state; and C. separating the solids from said water.
Claim 22
Dependent Claim
55 words
A SUITABLE OXIDANT IN AN AMOUNT SUFFICIENT TO OXIDIZE ABOUT 30 TO ABOUT 75 PERCENT OF THE NICKEL AND COBALT ATOMS TO A QUADRIVALENT STATE; B. PERMITTING SAID OXIDANT TO OXIDIZE ABOUT 30 TO ABOUT 75 PERCENT OF THE NICKEL AND COBALT ATOMS TO A QUADRIVALENT STATE; AND C. SEPARATING THE SOLIDS FROM SAID WATER.
Claim 23
Dependent Claim
55 words
A SUITABLE OXIDANT IN AN AMOUNT SUFFICIENT TO OXIDIZE ABOUT 30 TO ABOUT 75 PERCENT OF THE NICKEL AND COBALT ATOMS TO A QUADRIVALENT STATE; B. PERMITTING SAID OXIDANT TO OXIDIZE ABOUT 30 TO ABOUT 75 PERCENT OF THE NICKEL AND COBALT ATOMS TO A QUADRIVALENT STATE; AND C. SEPARATING THE SOLIDS FROM SAID WATER.
Claim 24
Dependent Claim
28 words
A composition according to claim 3 wherein the number of cobalt atoms in the composition is about 3 to about 7 percent of the number of nickel atoms.
Claim 25
Dependent Claim
13 words
A composition according to claim 3 including sufficient water to form a paste.
Claim 26
Dependent Claim
26 words
A composition according to claim 3 wherein said composition comprises: A. about 25 to about 35 percent of a compound selected from the group consisting of
Claim 27
Dependent Claim
14 words
An electrode comprising a conductive porous plaque containing a composition according to claim 3.
Claim 28
Dependent Claim
24 words
An electrode according to claim 7 wherein said conductive porous plaque comprises sintered fibers selected from the group consisting of nickel and nickelcoated metal.
Claim 29
Independent Claim
14 words
A METHOD MAKING AN ACTIVE ELECTRODE MATERIAL COMPRISING: A. PREPARING A COMPOSITION WHICH COMPRISES:
Claim 30
Independent Claim
14 words
A METHOD MAKING AN ACTIVE ELECTRODE MATERIAL COMPRISING: A. PREPARING A COMPOSITION WHICH COMPRISES:
Claim 31
Dependent Claim
13 words
A method according to claim 9 wherein said oxidant is the hypochlorite ion.
Claim 32
Dependent Claim
45 words
A method according to claim 9 wherein the amount of said oxidant is sufficient to oxidize about 65 to about 75 percent of the divalent metal ions present to a quadrivalent state and about 65 to about 75 percent of said ions are so oxidized.
Claim 33
Dependent Claim
49 words
A method according to claim 9 including the additional final steps of A. drying said solids; B. grinding said dried solids to a fine powder; C. mixing said powder with sufficient water to form a paste; and D. applying said paste to the interstices of a porous conducting plaque.
Claim 34
Dependent Claim
14 words
A method according to claim 9 wHerein said powder is ground to -325 mesh.
Claim 35
Dependent Claim
18 words
A method according to claim 9 wherein said cobalt is present in said composition as basic cobalt carbonate.
Claim 36
Dependent Claim
28 words
A method according to claim 9 wherein the number of cobalt atoms in said composition is about 3 to about 7 percent of the number of nickel atoms.
Claim 37
Dependent Claim
18 words
A method according to claim 9 wherein after said solids are separated they are washed to remove contaminates.
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |