Separator including coating layer with organic core-shell structure with lower melting shell and higher melting core, electrochemical devices including the same, and methods for making the same
US12021256B2 · kind B2 · utility
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Key dates
| Filing date | Jun 24, 2019 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | Nov 22, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are a separator for an electrochemical device, comprising a porous base membrane, a coating layer disposed on at least one side of the porous base membrane and at least one channel for ionic flow, wherein the coating layer comprises at least one organic material with, for example, a core-shell structure that melts when the electrochemical device is overheated to a temperature that is higher than the melting point of the at least one organic material to block the at least one channel for ionic flow; as well as an electrochemical device comprising the separator and a method for making the separator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.