Coatings for electrochemical electrodes and methods of making the same
US4624902A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1985 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Aug 26, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a coating for electrodes for use in electrochemical cells having an electrochemically active species and an electrolyte. The coating includes a selectively permeable material which allows for the diffusion of the active species through the coating during operation of the cell while providing a substantially impervious barrier to the electrolyte. Electrodes utilizing the coatings described herein may be used in primary and secondary cells over a wide range of operating temperatures to deliver better electrochemical performance even at room temperature. Methods of making the coating and an apparatus for performing these methods on a continuous basis are included in the present invention. A novel composition of matter also is contemplated containing lithium, silicon, fluorine prepared by exposing lithium metal to SiF.sub.4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.