Separator for rechargeable battery and rechargeable lithium battery including the same
US11584861B2 · kind B2 · utility
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4References
14Claims
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Key dates
| Filing date | May 16, 2017 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | May 24, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A separator for a rechargeable battery includes a porous substrate and a heat resistance layer on at least one surface of the porous substrate. The heat resistance layer includes an acryl-based copolymer, an alkali metal, and a filler. The acryl-based copolymer includes a unit derived from (meth)acrylate or (meth)acrylic acid, a cyano group-containing unit, and a sulfonate group-containing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.