Ionically conductive asymmetric composite membrane for electrochemical energy system applications
US11749811B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2021 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Feb 17, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/133
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ionically conductive asymmetric composite membrane for use in redox flow battery, fuel cell, electrolysis applications and the like is described. It comprises a microporous substrate membrane and an asymmetric hydrophilic ionomeric polymer coating layer on the surface of the microporous substrate layer. The coating layer is made of a hydrophilic ionomeric polymer. The asymmetric hydrophilic ionomeric polymer coating layer comprises a porous layer having a first surface and a second surface, the first surface of the porous layer on the surface of the microporous substrate layer and a nonporous layer on the second surface of the porous support layer. The microporous substrate membrane is made from a different polymer from the hydrophilic ionomeric polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.