Patent US4049468A successfully refreshed from Google Patents.
US4049468A
Expired / Lapsed
US
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Solid electrolyte cell
Assignee: Seiko Instruments Inc
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Filing: 1975-01-29
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Granted: 1977-09-20
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Expires: 1995-01-29
Abstract
Abstract A solid electrolyte cell having beta -alumina as the electrolyte is disclosed. The Cathodic active material is a compound having water of crystallization. The cathode is juxtaposed in contact with the surface of said beta -alumina electrolyte, and a very small amount of an aqueous solution of inorganic acid is added to the contact areas. The discharge characteristics of the cells at low temperature is improved.
Inventors
- 👤 Yuzuru Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:16
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/5825; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
38 words
A solid electrolyte cell comprising, an anodic-active material, a cathodic-active material and a solid β-alumina electrolyte juxtaposed therebetween and in contact therewith, wherein said cathodic-active material is a compound of the class having water of crystallization included therein.
Claim 2
Dependent Claim
38 words
A solid electrolyte cell comprising, an anodic-active material, a cathodic-active material and a solid β-alumina electrolyte juxtaposed therebetween and in contact therewith, wherein said cathodic-active material is a compound of the class having water of crystallization included therein.
Claim 3
Dependent Claim
29 words
The cell according to claim 1 wherein the areas of contact between said electrolyte and said cathodic active material is suffused with an aqueous solution of an inorganic acid.
Claim 4
Dependent Claim
18 words
The cell according to claim 2 wherein said contact areas are abraded before suffusion with said acidic solution.
Claim 5
Dependent Claim
25 words
The cell according to claim 1 wherein said cathodic material containing water of crystallization is at least one copper salt having a water of crystallization.
Claim 6
Dependent Claim
22 words
The cell according to claim 3 wherein said copper salts are selected from group consisting of the trihydric and pentahydric copper sulfates.
Claim 7
Dependent Claim
26 words
The cell according to claim 1 wherein said cathodic active material has admixed thereto an electrically conductive material inert to the electrolytic reactions of said cell.
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) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |