Method of making gas diffusion layers for electrochemical cells
US6465041B1 · kind B1 · utility
10Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2001 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Dec 19, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for making a gas diffusion layer for an electrochemical cell comprising the steps of: a) combining carbon particles and one or more surfactants in a typically aqueous vehicle to make a preliminary composition, typically by high shear mixing; b) adding one or more highly fluorinated polymers to said preliminary composition by low shear mixing to make a coating composition; and c) applying the coating composition to an electrically conductive porous substrate, typically by a low shear coating method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.