Separator including coating layer of inorganic and organic mixture, and battery including the same
US9412988B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2013 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Nov 22, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A porous separator including a porous base film; and a coating layer, the coating layer being on a surface of the porous base film and including a polyvinylidene fluoride homopolymer, a polyvinylidene fluoride-hexafluoropropylene copolymer, and inorganic particles, wherein the separator exhibits a thermal shrinkage of about 30% or less in a machine direction (MD) or in a transverse direction (TD), as measured after leaving the separator at 150° C. for 1 hour, a peel strength of about 50 gf/cm2 or more between the coating layer and the base film, and an adhesive strength of about 20 gf/cm2 or more between the coating layer and electrodes of a battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.