Gas diffusion composite electrode having novel hydrophilic layer
US4581116A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1984 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Dec 4, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A gas diffusion composite electrode is disclosed which is suitable for use in combination with an electrically conductive current collector. The electrode comprises an electrochemically active, porous and heterogeneous layer containing (1) an interconnected, hydrophilic island material comprising a blend of a major amount of an electrically conductive, particulate material, such as carbon black, in combination with an electrochemically active catalyst, and a minor amount of a hydrophobic polymer in combination with (2) a hydrophobic matrix material consisting essentially of a hydrophobic polymer rendered substantially porous by removal of a pore-forming ingredient. Methods of preparing the heterogeneous layer and the composite electrode are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.