Separator for electrochemical cells
US5091272A · kind A · utility
18Cited by
8References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | May 29, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to a heat sensitive polymer film and to a method for making the same. The film becomes substantially impermeable to air or ion flow above a predetermined temperature and is useful as a separator in electrochemical cells. The film comprises a microporous layer coated on at least one side with a layer of heat-fusible polymer particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.