US3901733A
Expired / Lapsed
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Thin film solid electrolyte structures and process of making same
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1974-10-07
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Granted: 1975-08-26
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Expires: 1994-10-07
Abstract
Abstract Thin film solid electrolyte structures are made by applying dense coating of ceramic ionic conductor such as Beta -alumina sodium polyaluminate to a substrate of a porous Beta -alumina or other sodium polyaluminate compounds and sintering the composite structure whereby a thin impermeable Beta -alumina film is formed on the porous support sturcture. The integral unit is a solid electrolyte consisting of a thin film ionic conductor supported by a porous substrate which is also an analyte reservoir.
Inventors
- 👤 Albert Toy
- 👤 Neal A Richardson
- 👤 Robert Bromberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:08
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M10/3918; H01M10/3927; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
26 words
A THIN FILM SOLID ELECTROLYTE COMPRISING: A. A DENSE IMPERMEABLE IONIC CONDUCTIVE SODIUM POLYALUMINATE FILM SUPPORTED ON B. A PORUS IONIC CONDUCTIVE SODIUM POLYALUMINATE SUBSTRATE SHEET.
Claim 2
Dependent Claim
26 words
A THIN FILM SOLID ELECTROLYTE COMPRISING: A. A DENSE IMPERMEABLE IONIC CONDUCTIVE SODIUM POLYALUMINATE FILM SUPPORTED ON B. A PORUS IONIC CONDUCTIVE SODIUM POLYALUMINATE SUBSTRATE SHEET.
Claim 3
Dependent Claim
20 words
A thin film electrolyte according to claim 1 wherein: said film has a thickness of from 50 to 1,000 microns.
Claim 4
Dependent Claim
27 words
A thin film electrolyte according to claim 1 wherein: said sodium polyaluminate is represented by the formula Na2O.xAl2O3 where x is an integer from 8 to 11.
Claim 5
Dependent Claim
39 words
A thin film electrolyte according to claim 1 wherein: said sodium polyaluminate has the formula Na2O.5Al2O3 and contains 0.5 to 5 present by weight of a metal oxide selected from the group consisting of magnesium oxide and lithium oxide.
Claim 6
Dependent Claim
68 words
A process for making a thin film solid electrolyte comprising: A. mixing (i) a powdered ionoic conductive sodium polyaluminate together with (ii) a pore forming compound to form a homogeneous mixture; B. compacting said mixture by pressure to sheet form; C. coating one side of said sheet with a dense layer of ionic conductive sodium polyaluminate compound; D. compacting said coated sheet; and E. sintering said coated sheet.
Claim 7
Dependent Claim
68 words
A process for making a thin film solid electrolyte comprising: A. mixing (i) a powdered ionoic conductive sodium polyaluminate together with (ii) a pore forming compound to form a homogeneous mixture; B. compacting said mixture by pressure to sheet form; C. coating one side of said sheet with a dense layer of ionic conductive sodium polyaluminate compound; D. compacting said coated sheet; and E. sintering said coated sheet.
Claim 8
Dependent Claim
26 words
A process according to claim 5 wherein: said sodium polyaluminate compound is represented by the formula Na2O.xAl2O3 where x is an integer from 8 to 11.
Claim 9
Dependent Claim
37 words
A process according to claim 5 wherein: said sodium polyaluminate has the formula Na2O.5Al2O3 and contains 0.5 to 5.0 percent by weight of a metal oxide selected from the group consisting of magnesium oxide and lithium oxide.
Claim 10
Dependent Claim
24 words
A process according to claim 5 wherein: said pore forming compound is selected from the group consisting of naphthalene, ammonium carbonate, anthracene, or coumarin.
Claim 11
Dependent Claim
16 words
A process according to claim 5 wherein: an organic binder is mixed with said powdered polyaluminate.
Claim 12
Dependent Claim
65 words
A process for making a thin film solid electrolyte comprising: A. mixing (i) a powdered ionic conductive sodium polyaluminate together with (ii) a pore forming compound to form a homogeneous mixture B. compacting said mixture by pressure to sheet form; C. sintering said compacted sheet; and D. spraying by plasma arc a layer of dense ionic conductive sodium polyaluminate on one side of said sheet.
Claim 13
Dependent Claim
65 words
A process for making a thin film solid electrolyte comprising: A. mixing (i) a powdered ionic conductive sodium polyaluminate together with (ii) a pore forming compound to form a homogeneous mixture B. compacting said mixture by pressure to sheet form; C. sintering said compacted sheet; and D. spraying by plasma arc a layer of dense ionic conductive sodium polyaluminate on one side of said sheet.
Claim 14
Dependent Claim
26 words
A process according to claim 10 wherein: said sodium polyaluminate compound is represented by the formula Na2O.xAl2O3 where x is an integer from 8 to 11.
Claim 15
Dependent Claim
37 words
A process according to claim 10 wherein: said sodium polyaluminate has the formula Na2O.5Al2O3 and containing 0.5 to 5.0 percent by weight of a metal oxide selected from the group consisting of magnesium oxide and lithium oxide.
Claim 16
Dependent Claim
24 words
A process according to claim 10 wherein: said pore forming compound is selected from the group consisting of naphthalene, ammonium carbonate, anthracene, or coumarin.
Claim 17
Dependent Claim
16 words
A process according to claim 10 wherein: an organic binder is mixed with said powdered polyaluminate.
Claim 18
Dependent Claim
67 words
A process for making a thin film solid electrolyte comprising: A. mixing (i) a powdered ionic conductive sodium polyaluminate together with (ii) a pore forming compound to form a homogeneous mixture; B. compacting said mixture by pressure to sheet form; C. sintering said compacted sheet; D. coating a slurry of an ionic conductive sodium polyaluminate on one side of said sheet; and E. sintering said coated sheet.
Claim 19
Dependent Claim
67 words
A process for making a thin film solid electrolyte comprising: A. mixing (i) a powdered ionic conductive sodium polyaluminate together with (ii) a pore forming compound to form a homogeneous mixture; B. compacting said mixture by pressure to sheet form; C. sintering said compacted sheet; D. coating a slurry of an ionic conductive sodium polyaluminate on one side of said sheet; and E. sintering said coated sheet.
Claim 20
Dependent Claim
26 words
A process according to claim 15 wherein: said sodium polyaluminate compound is represented by the formula Na2O.Al2O3 where x is an integer from 8 to 11.
Claim 21
Dependent Claim
38 words
A process According to claim 15 wherein: said sodium polyaluminate has the formula Na2O.5A l2O3 and contains 0.5 to 5.0 percent by weight of a metal oxide selected from the group consisting of magnesium oxide and lithium oxide.
Claim 22
Dependent Claim
24 words
A process according to claim 15 wherein: said pore forming compound is selected from the group consisting of naphthalene, ammonium carbonate, anthracene, or coumarin.
Claim 23
Dependent Claim
16 words
A process according to claim 15 wherein: an organic binder is mixed with said powdered polyaluminate.
References Cited (Backward Citations)
US3859427A
Cited
US3625773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |