Electrolyte for an electrochemical cell, and an electrochemical cell including the electrolyte
US4287271A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1980 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Aug 20, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrolyte for use in an electrochemical cell is disclosed of the alkali metal-aluminium-halide type. The electrolyte has a melting point below 140.degree. C. at atmospheric pressure and conforms with the stoichiometric product EQU MAlX.sub.4 wherein PA1 M represents lithium cations, a mixture of lithium and potassium cations or a mixture of sodium and potassium cations; and PA1 X represents a mixture of chloride and fluoride anions. A method of reducing the melting point of a sodium-aluminium-chloride or lithium-aluminium-chloride electrolyte by doping it with a potassium fluoride, sodium fluoride, or lithium fluoride, to obtain said electrolyte with a melting point below 140.degree. C. is disclosed, as are various electrochemical cells employing the product electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.