US5208121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery utilizing ceramic membranes
Assignee: Wisconsin Alumni Research Foundation
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Filing: 1991-06-18
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Granted: 1993-05-04
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Expires: 2011-06-18
Abstract
Abstract A thin film battery is disclosed based on the use of ceramic membrane technology. The battery includes a pair of conductive collectors on which the materials for the anode and the cathode may be spin coated. The separator is formed of a porous metal oxide ceramic membrane impregnated with electrolyte so that electrical separation is maintained while ion mobility is also maintained. The entire battery can be made less than 10 microns thick while generating a potential in the 1 volt range. <IMAGE>
Inventors
- 👤 Mark S. Yahnke
- 👤 Golan Shlomo
- 👤 Marc A. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:51
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/12; H01M10/00; H01M10/24; H01M10/28; H01M10/287; H01M50/00; H01M50/40; H01M50/409; H01M50/431; H01M50/434; H01M2300/00; H01M2300/0002; H01M2300/0014; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
A thin film battery cell comprising a cathode collector of conductive metal material; a cathode surface deposited on the cathode collector; a separator formed of a metal oxide porous ceramic membrane impregnated with an electrolyte; and an anode formed of a metallic conductive metal; wherein the cell is less than 10 microns in total thickness.
Claim 2
Dependent Claim
55 words
A thin film battery cell comprising a cathode collector of conductive metal material; a cathode surface deposited on the cathode collector; a separator formed of a metal oxide porous ceramic membrane impregnated with an electrolyte; and an anode formed of a metallic conductive metal; wherein the cell is less than 10 microns in total thickness.
Claim 3
Dependent Claim
43 words
A thin film battery cell comprising a cathode collector of conductive metal material; a cathode surface deposited on the cathode collector; a separator formed of a gamma-alumina porous ceramic membrane impregnated with an electrolyte; and an anode formed of a metallic conductive metal.
Claim 4
Dependent Claim
43 words
A thin film battery cell comprising a cathode collector of conductive metal material; a cathode surface deposited on the cathode collector; a separator formed of a gamma-alumina porous ceramic membrane impregnated with an electrolyte; and an anode formed of a metallic conductive metal.
Claim 5
Dependent Claim
19 words
A thin film battery cell as claimed in claim 2 wherein alumina membrane is less than 5 microns thick.
Claim 6
Dependent Claim
17 words
A thin film battery cell as claimed in claim 1 wherein the electrolyte is aqueous potassium hydroxide.
Claim 7
Dependent Claim
24 words
A thin film battery cell as claimed in claim 1 wherein the cathode surface is a spin coated surface of particles of manganese dioxide.
Claim 8
Dependent Claim
18 words
A thin film battery cell as claimed in claim 4 wherein manganese dioxide surface is mixed with graphite.
Claim 9
Dependent Claim
27 words
A thin film battery cell as claimed in claim 1 wherein the anode is a spin coated surface of zinc powder formed onto a metal film collector.
Claim 10
Dependent Claim
88 words
A thin film battery comprising a cathode collector of conductive metal foil; a cathode surface of spin coated manganese dioxide particles deposited on the cathode collector foil, the manganese dioxide being mixed with graphite, the thickness of the cathode surface being less than 3 micron; a separator formed of an alumina oxide porous ceramic membrane fired at a temperature of up to 500° C. and impregnated with an electrolyte; an anode collector of conductive metal foil; and an anode surface of zinc particles deposited on the anode collector.
Claim 11
Dependent Claim
88 words
A thin film battery comprising a cathode collector of conductive metal foil; a cathode surface of spin coated manganese dioxide particles deposited on the cathode collector foil, the manganese dioxide being mixed with graphite, the thickness of the cathode surface being less than 3 micron; a separator formed of an alumina oxide porous ceramic membrane fired at a temperature of up to 500° C. and impregnated with an electrolyte; an anode collector of conductive metal foil; and an anode surface of zinc particles deposited on the anode collector.
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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) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |