Separator having porous coating layer including PVDF-HFP block copolymer and method for manufacturing same
US11637350B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2019 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Aug 20, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A separator for an electrochemical device including a porous polymer substrate; and a porous coating layer formed on at least one surface of the porous polymer substrate, wherein the porous coating layer comprises inorganic particles and a binder polymer positioned on at least a part of a surface of individual inorganic particles to connect and fix the inorganic particles with one another. The binder polymer comprises a first block having repeating units and a second block having repeating units. A method for manufacturing the same is also provided. The separator shows low resistance, improved adhesion to an electrode and improved swelling property with a solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.