US3973990A
Expired / Lapsed
US
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Galvanic cell with solid fluoride ion-conductive electrolyte
Assignee: VARTA Batterie AG
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Filing: 1975-01-13
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Granted: 1976-08-10
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Expires: 1995-01-13
Abstract
Abstract In a galvanic cell, there is provided a solid fluoride ion-conductive electrolyte which is a compound having the formula MnPb1-nF2-n wherein M is at least one element selected from the group consisting of potassium and rubidium; Pb is usually all lead but part of the lead may be replaced by metal more electropositive than lead; F is fluorine; and n is a positive value.
Inventors
- 👤 Waldemar Borger
- 👤 Udo Hullmeine
- 👤 Ernst Voss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:49
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/182
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
A galvanic cell comprising positive and negative electrodes and a solid fluoride ion-conductive electrolyte having the formula M n Pb 1 -n F 2 -n wherein M is at least one element selected from the group consisting of potassium and rubidium; Pb is selected from the group consisting of all lead and partly lead, partly metal more electropositive than lead; F is fluorine; and n is a positive value ranging from 0.001 to 0.6.
Claim 2
Dependent Claim
74 words
A galvanic cell comprising positive and negative electrodes and a solid fluoride ion-conductive electrolyte having the formula M n Pb 1 -n F 2 -n wherein M is at least one element selected from the group consisting of potassium and rubidium; Pb is selected from the group consisting of all lead and partly lead, partly metal more electropositive than lead; F is fluorine; and n is a positive value ranging from 0.001 to 0.6.
Claim 3
Dependent Claim
14 words
Galvanic cell according to claim 1 wherein the solid electrolyte is the compound (PbF.sub.2).sub.0.99
Claim 4
Dependent Claim
16 words
Galvanic cell according to claim 1 wherein the solid electrolyte is the compound K.sub.0.25 Pb.sub.0.75 F.sub.1.75.
Claim 5
Dependent Claim
15 words
Galvanic cell according to claim 1 wherein said metal more electropositive than lead is zinc.
Claim 6
Dependent Claim
15 words
Galvanic cell according to claim 1 including a positive electrode formed of a heavy-metal fluoride.
Claim 7
Dependent Claim
15 words
Galvanic cell according to claim 1 including a positive electrode formed of (CF) x .
Claim 8
Dependent Claim
14 words
Galvanic cell according to claim 1 including a negative electrode formed of earth-alkali metal.
Claim 9
Dependent Claim
14 words
Galvanic cell according to claim 1 including a negative electrode formed of heavy metal.
Claim 10
Dependent Claim
28 words
Galvanic cell according to claim 8 wherein the heavy metal is selected from at least one of the metals of the group consisting of zinc, lead and cadmium.
References Cited (Backward Citations)
US3318734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |