Compacted carbon for electrochemical cells
US5677082A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1996 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | May 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention provides compacted carbon that is useful in the electrode of an alkali metal/carbon electrochemical cell of improved capacity selected from the group consisting of: PA1 (a) coke having the following properties: PA2 (i) an x-ray density of at least 2.00 grams per cubic centimeters, PA2 (ii) a closed porosity of no greater than 5%, and PA1 (iii) an open porosity of no greater than 47%; and PA1 (b) graphite having the following properties: PA2 (i) an x-ray density of at least 2.20 grams per cubic centimeters, PA2 (ii) a closed porosity of no greater than 5%, and PA2 (iii) an open porosity of no greater than 25%. This invention also relates to an electrode for an alkali metal/carbon electrochemical cell comprising compacted carbon as described above and a binder. This invention further provides an alkali metal/carbon electrochemical cell comprising: PA1 (a) an electrode as described above, PA1 (b) a non-aqueous electrolytic solution comprising an organic aprotic solvent and an electrolytically conductive salt and an alkali metal, and PA1 (c) a counterelectrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.