Organic phosphate additives for nonaqueous electrolyte in alkali metal electrochemical cells
US6068950A · kind A · utility
73Cited by
13References
27Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 19, 1997 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Nov 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An alkali metal, solid cathode, nonaqueous electrochemical cell capable of delivering high current pulses, rapidly recovering its open circuit voltage and having high current capacity, is described. The stated benefits are realized by the addition of at least one phosphate additive to an electrolyte comprising an alkali metal salt dissolved in a mixture of a low viscosity solvent and a high permittivity solvent. A preferred solvent mixture includes propylene carbonate, dimethoxyethane and an alkyl phosphate additive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.