US4393124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid electrolytes strengthened by metal dispersions
Assignee: United States Department of Energy
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Filing: 1981-10-05
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Granted: 1983-07-12
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Expires: 2001-10-05
Abstract
Abstract An improvement in solid electrolytes of advanced secondary batteries of the sodium-sulfur, sodium-halogen, and like combinations is achieved by providing said battery with a cermet electrolyte containing a metal dispersion ranging from 0.1 to 10.0 vol. % of a substantially nonreactive metal selected from the group consisting essentially of Pt, Cr, Fe, Co, Ni, Nb, their alloys, and their physical mixtures in the elemental or uncombined state, the remainder of said cermet being an ion-conductive ceramic material.
Inventors
- 👤 Robert J. Lauf
- 👤 Chester S. Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:34
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/185; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M10/3918; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
42 words
In a secondary battery, a solid electrolyte comprising: an ion-conductive sodium beta-alumina ceramic material; and a discontinuous metal phase dispersed throughout said ceramic material and selected from the group consisting of Pt, Cr, Fe, Co, Ni, Nb and alloys and mixtures thereof.
Claim 2
Dependent Claim
42 words
In a secondary battery, a solid electrolyte comprising: an ion-conductive sodium beta-alumina ceramic material; and a discontinuous metal phase dispersed throughout said ceramic material and selected from the group consisting of Pt, Cr, Fe, Co, Ni, Nb and alloys and mixtures thereof.
Claim 3
Dependent Claim
28 words
The secondary battery solid electrolyte of claim 1 wherein the metal phase content ranges from about 0.1 to 10.0 vol. %, the balance being sodium beta-alumina ceramic material.
Claim 4
Dependent Claim
25 words
The secondary battery solid electrolyte of claim 1 wherein the dispersed metal phase is Pt or Pt alloy and the ceramic material is sodium beta-alumina.
Claim 5
Dependent Claim
25 words
The secondary battery solid electrolyte of claim 1 wherein the dispersed metal phase is Cr or Cr alloy and the ceramic material is sodium beta-alumina.
Claim 6
Dependent Claim
20 words
The secondary battery solid electrolyte of claim 1 wherein said ceramic material comprises Na 2 O.11Al 2 O 3 .
Claim 7
Independent Claim
84 words
A method of inhibiting battery degradation during cycling comprising providing a battery with a cermet solid electrolyte employing a finely dispersed phase of metal particulates selected from the group consisting essentially of Pt, Cr, Fe, Co, Ni, Nb, their alloys, and their physical mixtures in the elemental or uncombined state, said metal phase comprising from about 0.1 to 10.0 vol. % of the ultimate article, essentially uniformly dispersed within a solid electrolyte sodium beta-alumina ceramic material which constitutes the volume balance of said electrolyte.
Claim 8
Independent Claim
84 words
A method of inhibiting battery degradation during cycling comprising providing a battery with a cermet solid electrolyte employing a finely dispersed phase of metal particulates selected from the group consisting essentially of Pt, Cr, Fe, Co, Ni, Nb, their alloys, and their physical mixtures in the elemental or uncombined state, said metal phase comprising from about 0.1 to 10.0 vol. % of the ultimate article, essentially uniformly dispersed within a solid electrolyte sodium beta-alumina ceramic material which constitutes the volume balance of said electrolyte.
Claim 9
Dependent Claim
17 words
The method of claim 6 wherein said battery is of the sodium-sulfur, sodium-halogen, and like combination types.
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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) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |