US4237196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium ion-conducting glass electrolyte for sodium-sulfur batteries
Assignee: Schott AG
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Filing: 1979-03-19
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Granted: 1980-12-02
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Expires: 1999-03-19
Abstract
Abstract An electrolyte glass for use as the solid electrolyte in high-temperature galvanic batteries, for example a sodium-sulfur battery. The glass electrolyte has relatively low resistivity and high corrosion resistance and is easily worked by glass manufacturing techniques. The composition of the glass electrolyte according to the invention is defined by xNa 2 O·ySiO 2 ·zAl 2 O 3 .
Inventors
- 👤 Gunter Gutmann
- 👤 Holger Kistrup
- 👤 Friedrich G. K. Baucke
- 👤 Gerd M/ller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:13
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M10/3918; C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/083; C03C4/00; C03C4/18; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
35 words
A battery electrolyte formed by sodium ion conducting glass for use in sodium-sulfur batteries, having the composition xNa.sub.2 O.ySiO.sub.2.zAl.sub.2 O.sub.3 in which x/y lies between 0.52 and 0.92 and x/z lies between 2 and 20.
Claim 2
Dependent Claim
35 words
A battery electrolyte formed by sodium ion conducting glass for use in sodium-sulfur batteries, having the composition xNa.sub.2 O.ySiO.sub.2.zAl.sub.2 O.sub.3 in which x/y lies between 0.52 and 0.92 and x/z lies between 2 and 20.
Claim 3
Dependent Claim
39 words
A glass electrolyte according to claim 1, having the composition xNa 2 O.ySiO 2 .zAl 2 O 3 in which x/y lies in the range between 0.75 and 0.89 and x/z lies in the range between 2.7 and 4.
Claim 4
Dependent Claim
17 words
A glass electrolyte according to claim 1, and having the shape of a plurality of capillary tubes.
Claim 5
Dependent Claim
16 words
A glass electrolyte according to claim 1, and having the shape of at least one plate.
Claim 6
Independent Claim
54 words
A method for using a glass electrolyte in a galvanic battery in which sodium is the active mass of the negative electrode, and in which the glass electrolyte has the composition xNa 2 O.ySiO 2 .zAl 2 O 3 in which x/y lies between 0.52 and 0.92 and x/z lies between 2 and 20.
Claim 7
Independent Claim
54 words
A method for using a glass electrolyte in a galvanic battery in which sodium is the active mass of the negative electrode, and in which the glass electrolyte has the composition xNa 2 O.ySiO 2 .zAl 2 O 3 in which x/y lies between 0.52 and 0.92 and x/z lies between 2 and 20.
Claim 8
Dependent Claim
30 words
In a sodium-sulfur battery containing a solid electrolyte separating a negative active sodium mass from a positive active mass, the improvement wherein said electrolyte comprises the electrolyte of claim 1.
Claim 9
Dependent Claim
19 words
A battery electrolyte in accordance with claim 1 having a resistivity at 300° C. between 700 and 3,000 Ohm-cm.
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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |