Composite separator, method of preparing the same, and secondary battery including the same
US11316232B2 · kind B2 · utility
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6References
20Claims
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Key dates
| Filing date | May 7, 2018 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Mar 3, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composite separator, a method of preparing the composite separator, and a secondary battery including the composite separator are provided. The composite separator includes a heat-resistant nonwoven fabric, and a porous coating film on at least one surface of the heat-resistant nonwoven fabric and including a multi-phase polymer including a stationary phase segment and a reversible phase segment, wherein an amount of the stationary phase segment is larger than an amount of the reversible phase segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.