Chalcogenide electrochemical cell
US4288508A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Dec 4, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery is provided in which the anode contains an alkali metal in a high state of thermodynamic activity; the cathode comprises a partially alkali metal-intercalated chalcogenide of the formula A.sub.y MZ.sub.x wherein A is an alkali metal more electropositive and larger than the anode alkali metal, M is a transition metal of Group IV or V, x is a numerical value of from about 1.8 to about 2.1, y is a numerical value of from about 0.01 to about 1 and Z is sulfur, selenium or tellurium; and the electrolyte comprises ions of the anode metal in a medium which is compatible with the anode and cathode allowing transport of the ion from anode to intercalate into the cathode. In the discharged state the battery includes a cathode characterized by the presence of A'.sub.z A.sub.y MZ.sub.x in which A' is alkali metal more electronegative than A and z is a numerical value in the range 0<z.ltoreq.3.25.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.