Separator for a rechargeable battery
US10608226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2018 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Dec 8, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides a coating or film adapted to be arranged between a separator and at least one electrode of a rechargeable battery. The coating or film comprises a porous layer comprising a layer material having at least a first material and a second material, the first and the second materials being arranged to comprise a plurality of pores for passage of ions therethrough; and the second material is adapted to reduce in size upon drying such that porosity of the porous layer is improved or enhanced at a normal operating temperature; wherein, in response to temperature change, the layer material is adapted to undergo a first phase change during which the pores of said porous layer are adapted to substantially close to thereby substantially reduce or prevent further passage of ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.