Patent US3926671A successfully refreshed from Google Patents.
US3926671A
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Method of manufacturing positive nickel hydroxide electrodes
Assignee: Battelle Memorial Institute Inc
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Filing: 1974-06-05
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Granted: 1975-12-16
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Expires: 1994-06-05
Abstract
Abstract Method of manufacturing a positive nickel hydroxide electrode. A highly porous core structure of organic material having a fibrous or reticular texture is uniformly coated with nickel powder and then subjected to a thermal treatment which provides sintering of the powder coating and removal of the organic core material. A consolidated, porous nickel support structure is thus produced which has substantially the same texture and porosity as the initial core structure. To provide the positive electrode including the active mass, nickel hydroxide is deposited in the pores of the nickel support structure.
Inventors
- 👤 Manfred A Gutjahr
- 👤 Rudolf Schmid
- 👤 Klaus D Beccu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:31
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/32; H01M4/64; H01M4/70; H01M4/80; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
A METHOD OF MANUFACTURING A POSITIVE STORAGE BATTERY ELECTRODE HAVING AN ACTIVE MASS OF NICKEL HYDROXIDE INCORPORATED IN A CONSOLIDATED, POROUS, NICKEL ELECTRODE SUPPORT, COMPRISING THE STEPS OF: A. INTIMATELY CONTACTING A HIGHLY POROUS, FIBROUS OR OPENPORE RETICULAR, ORGANIC CORE STRUCTURE, HAVING A LARGE INTERNAL SURFACE, WITH A MASS OF DRY POWDER PARTICLES CONSISTING ESSENTIALLY OF NICKEL AND HAVING A MEAN GRAIN SIZE LESS THAN 10 MICRONS, SO THAT SAID PARTICLES ARE BROUGHT INTO CONTACT WITH SAID INTERNAL SURFACE AND ADHERE THEREON TO FORM A SUBSTANTIALLY UNIFORM POWDER COATING COVERING THE ORGANIC CORE STRUCTURE; B. SUBJECTING THE RESULTING POWDER-COATED ORGANIC CORE STRUCTURE TO A THERMAL TREATMENT SUCH AS TO CAUSE SINTERING OF THE PARTICLES OF SAID POWDER COATING, WITH REMOVAL OF THE UNDERLYING ORGANIC CORE STRUCTURE, SO AS TO THEREBY PRODUCE A STRONGLY CONSOLIDATED NICKEL ELECTRODE SUPPORT STRUCTURE HAVING SUBSTANTIALLY THE SAME STRUCTURE AND POROSITY AS THE SAID ORGANIC CORE STRUCTURE; AND INCORPORATING THE ACTIVE ELECTRODE MASS IN THE RESULTING NICKEL SUPPORT STRUCTURE BY DEPOSITING NICEKL HYDROXIDE IN THE PORES THEREOF.
Claim 2
Independent Claim
171 words
A METHOD OF MANUFACTURING A POSITIVE STORAGE BATTERY ELECTRODE HAVING AN ACTIVE MASS OF NICKEL HYDROXIDE INCORPORATED IN A CONSOLIDATED, POROUS, NICKEL ELECTRODE SUPPORT, COMPRISING THE STEPS OF: A. INTIMATELY CONTACTING A HIGHLY POROUS, FIBROUS OR OPENPORE RETICULAR, ORGANIC CORE STRUCTURE, HAVING A LARGE INTERNAL SURFACE, WITH A MASS OF DRY POWDER PARTICLES CONSISTING ESSENTIALLY OF NICKEL AND HAVING A MEAN GRAIN SIZE LESS THAN 10 MICRONS, SO THAT SAID PARTICLES ARE BROUGHT INTO CONTACT WITH SAID INTERNAL SURFACE AND ADHERE THEREON TO FORM A SUBSTANTIALLY UNIFORM POWDER COATING COVERING THE ORGANIC CORE STRUCTURE; B. SUBJECTING THE RESULTING POWDER-COATED ORGANIC CORE STRUCTURE TO A THERMAL TREATMENT SUCH AS TO CAUSE SINTERING OF THE PARTICLES OF SAID POWDER COATING, WITH REMOVAL OF THE UNDERLYING ORGANIC CORE STRUCTURE, SO AS TO THEREBY PRODUCE A STRONGLY CONSOLIDATED NICKEL ELECTRODE SUPPORT STRUCTURE HAVING SUBSTANTIALLY THE SAME STRUCTURE AND POROSITY AS THE SAID ORGANIC CORE STRUCTURE; AND INCORPORATING THE ACTIVE ELECTRODE MASS IN THE RESULTING NICKEL SUPPORT STRUCTURE BY DEPOSITING NICEKL HYDROXIDE IN THE PORES THEREOF.
Claim 3
Dependent Claim
25 words
The method according to claim 1, wherein the core structure is provided with a tacky binding agent to enhance adhesion of the applied powder particles.
Claim 4
Dependent Claim
23 words
The method according to claim 1, wherein the said powder is applied by contact of the core structure with a nickel powder bed.
Claim 5
Dependent Claim
25 words
The method according to claim 3, wherein the said powder is applied by contact of the core structure with a fluidized bed of said powder.
Claim 6
Dependent Claim
25 words
The method according to claim 1, wherein said powder is applied by spraying it onto the core structure in a jet of a fluid medium.
Claim 7
Dependent Claim
70 words
The method according to claim 1, wherein said thermal treatment includes heating of the coated core structure to a temperature of 800*-1200*C in a protective atmosphere including oxygen in an amount which is so selected as to allow oxidation of the core structure material without oxidation of the applied nickel powder, whereby to allow sintering of the nickel powder particles of said coating and pyrolysis of the core structure material.
Claim 8
Dependent Claim
73 words
The method according to claim 1, wherein said thermal treatment includes heating the coated core structure in an atmosphere including oxygen to a temperature of at least 700*C to allow pyrolysis and combustion of the core structure material, as well as heating to a temperature of 800*-1200*C in a reducing atmosphere so as to provide reduction and sintering of the powder particles, whereby to provide said consolidated support structure consisting of metallic nickel.
Claim 9
Dependent Claim
26 words
The method according to claim 1, wherein the coated core structure is arranged during said thermal treatment between two plates spaced apart at a predetermined distance.
Claim 10
Dependent Claim
20 words
The method according to claim 1, wherein nickel hydroxide is introduced into the pores of the support structure by electrophoresis.
Claim 11
Dependent Claim
14 words
The method according to claim 1, wherein lithium is added to the active mass.
Claim 12
Dependent Claim
19 words
The method according to claim 10, wherein lithium hydroxide or a lithium salt is added to the active mass.
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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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |