Reversal resistant non-aqueous electrochemical cell
US4598029A · kind A · utility
5Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1985 |
| Grant date | Jul 1, 1986 |
| Priority date | — |
| Expiry date | Oct 11, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2300/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Problems associated with voltage reversal hazards in high energy density non-aqueous electrochemical cells are prevented for all except extremely high discharge rates by the provision of a safety separator which is sufficiently porous to allow normal cell operation in the forward direction but which prevents voltage reversal in all but the most extreme cases. The separator may take the form of a thin sheet of ceramic material which need not contact either the anode or the cathode but which forms an ion-permeable mechanical barrier separating the electrodes while allowing normal cell operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.