Three layer carbon based electrode
US4586999A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1984 |
| Grant date | May 6, 1986 |
| Priority date | — |
| Expiry date | Oct 29, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention is an electrode comprising: PA1 (a) an electrically conductive first layer having a plurality of interconnecting passageways of an average diameter of from about 0.1 to about 1.0 microns, PA1 said first layer containing from about 2 to about 10 weight percent of a catalyst active for the reduction of oxygen, and having a hydrophobic carbon containing from about 85 to about 95 weight percent carbon and from about 5 to about 15 weight percent of a first hydrophobic material, PA1 (b) an electrically conductive second layer in fluid flow communication with the first layer and having a plurality of interconnecting passageways of an average diameter of from about 0.2 to about 10 microns, PA1 said second layer physically contacting the first layer and containing from about 2 to about 10 weight percent of a catalyst active for oxygen reduction, and having a hydrophobic carbon having from about 60 to about 85 weight percent carbon and from about 15 to about 40 weight percent of a second hydrophobic material; PA1 (c) a substantially completely electrically nonconductive, catalytically inactive third layer in physical contact and in fluid flow communication with said second laye…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.