Patent US4614628A successfully refreshed from Google Patents.
US4614628A
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US
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Solid electrolyte structure and method for forming
Assignee: Massachusetts Institute of Technology
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Filing: 1984-07-16
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Granted: 1986-09-30
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Expires: 2004-07-16
Abstract
Abstract Solid oxide electrolyte structures, e.g., flat plates, suitable for use in an electrochemical energy converter are prepared by a plasma deposition technique. This process is comprised of forming a suspension of the oxide powders, passing the suspension through an arc discharge to melt the oxide particles and depositing the molten particles on a substrate. The deposited layer is allowed to cool and then is removed intact from the substrate. The plate then can be sintered and a fuel electrode material and an oxidizer electrode material can be applied on the opposing surfaces of the plate.
Inventors
- 👤 Michael S. Hsu
- 👤 Charles F. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:03
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/653; C04B35/01; C04B35/48; C04B35/486; C04B35/64; C25; C25B; C25B9/00; C25B9/60; C25B9/67; H; H01; H01M; H01M8/00; H01M8/02; H01M8/0202; H01M8/0267; H01M8/10; H01M8/12; H01M8/1231; H01M8/124; H01M8/1246; H01M8/1253; H01M8/24; H01M8/241; H01M8/2425; H01M8/2432; H01M8/2465; H01M8/2483; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
The process for forming a solid-oxide electrolyte plate which comprises suspending powders of said oxide in a working gas, passing the suspension through an arc discharged to melt said particles and depositing said molten particle on a flat substrate, allowing said particles to cool and form a solid layer and removing said solid layer from said substrate, sintering said removed solid at a temperature between about 1400° C. and 1600° C., depositing a fuel electrode material on one surface of the sintered solid by flame deposition and depositing an oxidized electrode material on a second surface of the sintered solid, the degree of roughness of the surface of said flat substrate are irregularities between about 0.000032-0.000064 inches in size.
Claim 2
Dependent Claim
119 words
The process for forming a solid-oxide electrolyte plate which comprises suspending powders of said oxide in a working gas, passing the suspension through an arc discharged to melt said particles and depositing said molten particle on a flat substrate, allowing said particles to cool and form a solid layer and removing said solid layer from said substrate, sintering said removed solid at a temperature between about 1400° C. and 1600° C., depositing a fuel electrode material on one surface of the sintered solid by flame deposition and depositing an oxidized electrode material on a second surface of the sintered solid, the degree of roughness of the surface of said flat substrate are irregularities between about 0.000032-0.000064 inches in size.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein said substrate is selected from the group consisting of copper, aluminum and graphite.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein, the plate has a thickness between about 0.005 and 0.015".
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein, each electrode has a thickness of between about 0.002" and 0.005".
Claim 6
Dependent Claim
28 words
The process of claim 1 wherein said solid oxide comprises zirconia in admixture with an oxide selected from the group consisting of magnesia, calcia, yttria and mixtures thereof.
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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) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |