Membrane electrode assembly having an adhesive layer impregnating through an electrocatalyst layer and into a first gas diffusion substrate
US9083012B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 22, 2005 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Dec 26, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A membrane electrode assembly comprises an ion-conducting membrane; a first electrocatalyst layer having a surface facing the membrane; a first electronically-conducting porous gas diffusion substrate facing the other surface of the first electrocatalyst layer; and a first film member interposed between the membrane and the first electrocatalyst layer. The first electrocatalyst layer has an edge region and a central region, and the first film member contacts the edge region and not the central region. A first adhesive layer is present on the surface of the first film member facing the first electrocatalyst layer, and the first adhesive layer adheres the first film member to the first electrocatalyst layer, impregnates through the first electrocatalyst layer, and impregnates into the first gas diffusion substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.