US4048407A
Expired / Lapsed
US
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Electrode for primary or secondary battery and method for producing such an electrode
Assignee: US Philips Corp
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Filing: 1976-09-09
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Granted: 1977-09-13
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Expires: 1996-09-09
Abstract
Abstract Electrode for a primary of secondary battery the electrochemically active part of which comprises a porous layer of a hydride of an intermetallic compound which is sintered to a metallic support, the pores being filled with a hydrophylic water-insoluble macromolecular material.
Inventors
- 👤 Pieter Abraham Boter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:09
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/242; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
An electrode for a primary or secondary battery comprising a porous metal support, a porous sintered layer of a powder of an intermetallic compound which can absorb and release reversibly hydrogen while forming hydrides, a hydrophylic water-insoluble macromolecular material in the pores of the sintered layer.
Claim 2
Dependent Claim
46 words
An electrode for a primary or secondary battery comprising a porous metal support, a porous sintered layer of a powder of an intermetallic compound which can absorb and release reversibly hydrogen while forming hydrides, a hydrophylic water-insoluble macromolecular material in the pores of the sintered layer.
Claim 3
Dependent Claim
27 words
An electrode as claimed in claim 1 wherein the intermetallic compound is a lanthanum-nickel compound having a plateau pressure not exceeding one atmosphere at the operating temperature.
Claim 4
Dependent Claim
15 words
An electrode as claimed in claim 2 wherein the intermetallic compound is LaNi 4 Cu.
Claim 5
Dependent Claim
16 words
An electrode as claimed in claim 2 wherein the hydrophylic macromolecular material has alcoholic hydroxyl groups.
Claim 6
Dependent Claim
14 words
An electrode as claimed in claim 4 wherein the hydrophylic macromolecular material is polyvinylalcohol.
Claim 7
Dependent Claim
17 words
An electrode as claimed in claim 4 wherein the hydrophylic macromolecular material is a saponifiable cellulose derivative.
Claim 8
Dependent Claim
16 words
An electrode as claimed in claim 6 wherein the hydrophylic macromolecular material is cellulose acetate butyrate.
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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |