Separator, lithium secondary battery including separator, and manufacturing method therefor
US12166234B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Oct 22, 2020 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Jan 31, 2042 |
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 lithium secondary battery, including: a porous polymer substrate; and a crosslinked porous coating layer on at least one surface of the porous polymer substrate. The crosslinked porous coating layer includes inorganic particles and a crosslinkable binder polymer crosslinked through urethane crosslinking. The separator has improved heat resistance as compared to the conventional separators and maintains adhesion to an electrode. A lithium secondary battery including the separator is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.