US4381258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic cell with a non-aqueous electrolyte
Assignee: Alcatel Lucent SAS
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Filing: 1981-11-13
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Granted: 1983-04-26
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Expires: 2001-11-13
Abstract
Abstract An electric cell with a non-aqueous electrolyte. The cell includes a positive electrode whose active material is suitable for inserting the negative active material dynamically, a negative electrode whose active material includes at least one alkali metal, and an electrolyte, wherein said positive electrode includes at least one compound whose general formula is MX 4 R n T p , where M represents an element chosen from among silicon, germanium, tin and lead, X represents sulphur, selenium or tellurium, R and T represent an element chosen from among copper, silver, manganese, iron, cobalt and nickel, n being greater than or equal to 0 and less than or equal to 4, p being greater than or equal to 0 and less than or equal to 2. The invention is used in connection with button type electric cells.
Inventors
- 👤 Alain Le Mehaute
- 👤 Jean Rouxel
- 👤 Annie Le Blanc-Soreau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:41
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; C; C01; C01G; C01G1/00; C01G1/12; H01M10/00; H01M10/05; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
A method of manufacturing a positive electrode for an electric cell having a negative electrode, whose active material includes an alkali metal, and an electrolyte, said positive electrode including at least one compound chosen from the group consisting of Fe 2 SiS 4 , Fe 2 GeS 4 , Cu 2 Fe 2 SnS 4 , Fe 2 SnS 4 , Cu 2 MnSnS 4 , Cu 4 SnS 4 and mixtures thereof, wherein the method comprises, in sequence: preparing said compound in powdered form; dispersing said powdered compound in a polytetrafluoroethylene emulsion in the proportion of 15 to 5% of emulsion for 85 to 95% of powdered compound, by weight, adding alcohol to the dispersion of powdered compound in the emulsion to form a consolidated compound; and compressing said consolidated compound onto a conductive support.
Claim 2
Independent Claim
136 words
A method of manufacturing a positive electrode for an electric cell having a negative electrode, whose active material includes an alkali metal, and an electrolyte, said positive electrode including at least one compound chosen from the group consisting of Fe 2 SiS 4 , Fe 2 GeS 4 , Cu 2 Fe 2 SnS 4 , Fe 2 SnS 4 , Cu 2 MnSnS 4 , Cu 4 SnS 4 and mixtures thereof, wherein the method comprises, in sequence: preparing said compound in powdered form; dispersing said powdered compound in a polytetrafluoroethylene emulsion in the proportion of 15 to 5% of emulsion for 85 to 95% of powdered compound, by weight, adding alcohol to the dispersion of powdered compound in the emulsion to form a consolidated compound; and compressing said consolidated compound onto a conductive support.
Claim 3
Independent Claim
101 words
A method of manufacturing a positive electrode for an electric cell having a negative electrode, whose active material includes an alkali metal, and an electrolyte, said positive electrode including at least one compound chosen from the group consisting of Fe 2 SiS 4 , Fe 2 GeS 4 , Cu 2 Fe 2 SnS 4 , Fe 2 SnS 4 , Cu 2 MnSnS 4 , Cu 4 SnS 4 and mixtures thereof, wherein the method comprises: preparing said compound in powdered form; dissolving polyvinyl formal in propylene carbonate to form a gel; and mixing the powdered compound with said gel.
Claim 4
Independent Claim
101 words
A method of manufacturing a positive electrode for an electric cell having a negative electrode, whose active material includes an alkali metal, and an electrolyte, said positive electrode including at least one compound chosen from the group consisting of Fe 2 SiS 4 , Fe 2 GeS 4 , Cu 2 Fe 2 SnS 4 , Fe 2 SnS 4 , Cu 2 MnSnS 4 , Cu 4 SnS 4 and mixtures thereof, wherein the method comprises: preparing said compound in powdered form; dissolving polyvinyl formal in propylene carbonate to form a gel; and mixing the powdered compound with said gel.
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) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |