Separator including porous substrate layer, metal oxide intermediate layer, and ceramic coating layer, method of preparing the same and lithium-ion battery including the same
US11695185B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Sep 4, 2020 |
| Grant date | Jul 4, 2023 |
| Priority date | — |
| Expiry date | Jun 17, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A separator including a porous substrate layer, an intermediate layer, and a ceramic coating layer is provided. The ceramic coating layer is disposed on a side of the intermediate layer away from the porous substrate layer. The intermediate layer includes a metal oxide powder. The particle diameter of the metal oxide powder is less than the pore diameter of the porous substrate layer, and at least a portion of the metal oxide powder is embedded in the porous substrate layer. A method of preparing the separator and a lithium-ion battery including the separator are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.