Fibrillated matrix active layer for an electrode
US4354958A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1980 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Oct 31, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B11/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure is directed to an improved fibrillated matrix-type active layer for an electrode of improved strength and durability and capable of operation at high current density with enhanced resistance to mechanical failure, and to a process for producing such improved active layers. The process is characterized by alternately or simultaneously producing two components; combining the components; shear blending (fibrillating) the mixture; drying; chopping to a fine powder form, and rolling into a self-sustaining, coherent shear form. Alternatively, the active layer can be formed by wet deposition of the powder on a filter paper or like medium. The term "matrix" as used herein means that the active carbon particles are present within an unsintered network of carbon black/PTFE (fibrillated) material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.