US4283844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making battery electrode structure
Assignee: The AT&T MVPD Group LLC
•
Filing: 1979-08-16
•
Granted: 1981-08-18
•
Expires: 1999-08-16
Abstract
Abstract Substrate for nickel-hydrogen battery electrode is etched from nickel sheet metal to provide inner and outer rims 54, 56 for self centering, a tab 62 on which a lead can be welded and properly distributed openings through conductors for optimum ion flow and electric conduction.
Inventors
- 👤 Martin J. Milden
- 👤 Stanley Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:00
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/0438; H01M4/044; H01M10/00; H01M10/34; H01M10/345; H01M4/24; H01M4/32; H01M4/64; H01M4/70; H01M4/72; H01M4/74; H01M4/742; H01M4/80; H01M4/801; H01M4/803; H01M4/86; H01M2004/026; H01M2004/028; H01M4/36; H01M4/48; H01M4/52; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T29/00; Y10T29/10; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
155 words
The method of making a self-supporting electrode substrate for a nickel-hydrogen cell comprising the steps of: coating nickel sheet metal with a photoresist; exposing the photoresist in accordance with a desired electrode pattern to leave a solid outer rim around the electrode substrate, to leave a solid inner rim within said electrode substrate with an inner opening interiorly of the inner rim toward the center of the electrode substrate and with a tab positioned on the inner rim, together with radially directed conductors attached to the inner rim and to the outer rim and being of greater cross-section closer to the inner rim than to the outer rim to reduce electrical resistance drop as current moves through the radial conductors with respect to the inner rim; chemically etching away through the nickel to form a nickel substrate having perforations therethrough in accordance with the photoresist pattern to provide ion flow paths perpendicular to the conductors.
Claim 2
Independent Claim
155 words
The method of making a self-supporting electrode substrate for a nickel-hydrogen cell comprising the steps of: coating nickel sheet metal with a photoresist; exposing the photoresist in accordance with a desired electrode pattern to leave a solid outer rim around the electrode substrate, to leave a solid inner rim within said electrode substrate with an inner opening interiorly of the inner rim toward the center of the electrode substrate and with a tab positioned on the inner rim, together with radially directed conductors attached to the inner rim and to the outer rim and being of greater cross-section closer to the inner rim than to the outer rim to reduce electrical resistance drop as current moves through the radial conductors with respect to the inner rim; chemically etching away through the nickel to form a nickel substrate having perforations therethrough in accordance with the photoresist pattern to provide ion flow paths perpendicular to the conductors.
Claim 3
Dependent Claim
16 words
The method of claim 1 further including the step of: welding a lead onto the tab.
Claim 4
Independent Claim
132 words
The method of making an electrode for a nickel-hydrogen cell comprising the steps of: coating nickel sheet metal with a photoresist; exposing the photoresist in accordance with a desired electrode substrate pattern to leave a solid outer rim around the electrode substrate and a solid inner rim within the electrode substrate with an inner opening within the inner rim and to leave a plurality of substantially radially directed conductors connected to both the inner and outer rim, chemically etching away through the nickel sheet to form a self-supporting nickel substrate having perforations therethrough; sintering nickel powder on one side of the etched metallic nickel substrate having openings therethrough so that the sintered nickel is porous; and depositing nickel-hydroxide in the porous sintered nickel to form a positive electrode for a nickel-hydrogen battery.
Claim 5
Independent Claim
132 words
The method of making an electrode for a nickel-hydrogen cell comprising the steps of: coating nickel sheet metal with a photoresist; exposing the photoresist in accordance with a desired electrode substrate pattern to leave a solid outer rim around the electrode substrate and a solid inner rim within the electrode substrate with an inner opening within the inner rim and to leave a plurality of substantially radially directed conductors connected to both the inner and outer rim, chemically etching away through the nickel sheet to form a self-supporting nickel substrate having perforations therethrough; sintering nickel powder on one side of the etched metallic nickel substrate having openings therethrough so that the sintered nickel is porous; and depositing nickel-hydroxide in the porous sintered nickel to form a positive electrode for a nickel-hydrogen battery.
Claim 6
Independent Claim
112 words
The method of making an electrode for a nickel-hydrogen cell comprising the steps of: coating nickel sheet metal with a photoresist; exposing the photoresist in accordance with a desired electrode substrate pattern to leave a solid outer rim around the electrode substrate and a solid inner rim within the electrode substrate with an inner opening within the inner rim and to leave a plurality of substantially radially directed conductors connected to both the inner and outer rim; chemically etching away through the nickel sheet to form a self-supporting nickel substrate having perforations therethrough; adhesively securing a porous teflon layer on one face of the self-supporting etched nickel substrate with etched openings therethrough.
Claim 7
Independent Claim
112 words
The method of making an electrode for a nickel-hydrogen cell comprising the steps of: coating nickel sheet metal with a photoresist; exposing the photoresist in accordance with a desired electrode substrate pattern to leave a solid outer rim around the electrode substrate and a solid inner rim within the electrode substrate with an inner opening within the inner rim and to leave a plurality of substantially radially directed conductors connected to both the inner and outer rim; chemically etching away through the nickel sheet to form a self-supporting nickel substrate having perforations therethrough; adhesively securing a porous teflon layer on one face of the self-supporting etched nickel substrate with etched openings therethrough.
Claim 8
Dependent Claim
41 words
The method of claim 4 further including the steps of: sintering a mixture of platinum powder and Teflon on the other face of the etched nickel substrate having openings therethrough so as to form a negative electrode for a nickel-hydrogen battery.
Claim 9
Independent Claim
137 words
The method of making an electrode for a nickel-hydrogen cell comprising the steps of: coating nickel sheet metal with a photoresist; exposing the photoresist in accordance with a desired electrode substrate pattern to leave a solid outer rim around the electrode substrate and a solid inner rim within the electrode substrate with an inner opening within the inner rim and to leave a plurality of substantially radially directed conductors connected to both the inner and outer rim; chemically etching away through the nickel sheel to form a self-supporting nickel substrate having perforations therethrough; depositing electro-chemically active material on said electrode substrate; and assembling a plurality of said coated substrates onto a central support tube positioned within the metallic rim so that the plurality of coated electrode substrates is centered on and supported on the central support tube.
Claim 10
Independent Claim
137 words
The method of making an electrode for a nickel-hydrogen cell comprising the steps of: coating nickel sheet metal with a photoresist; exposing the photoresist in accordance with a desired electrode substrate pattern to leave a solid outer rim around the electrode substrate and a solid inner rim within the electrode substrate with an inner opening within the inner rim and to leave a plurality of substantially radially directed conductors connected to both the inner and outer rim; chemically etching away through the nickel sheel to form a self-supporting nickel substrate having perforations therethrough; depositing electro-chemically active material on said electrode substrate; and assembling a plurality of said coated substrates onto a central support tube positioned within the metallic rim so that the plurality of coated electrode substrates is centered on and supported on the central support tube.
References Cited (Backward Citations)
US3532545A
Cited
US3508984A
Cited
US3700418A
Cited
US3926671A
Cited
US3944434A
Cited
US4206271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |