Separator and electrochemical device including the same
US11394084B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2017 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Nov 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M50/457
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a first porous coating layer and a second porous coating layer formed on one surface and the other surface of the porous substrate, respectively, and including a plurality of inorganic particles, a binder polymer disposed on a part or the whole of the surface of the inorganic particles so that the inorganic particles are connected and fixed with each other, and an anionic surfactant, wherein the inorganic particles include boehmite particles and non-boehmite particles, and the boehmite particles and the binder polymer are present at a weight ratio of 1:1-1:5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.