Process for fabrication of low basis weight electrode active blanks
US6582545B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2000 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | May 5, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to the realization that the dimensions and basis weight of an electrode active admixture such as a transition metal oxide, and particularly silver vanadium oxide, formed into an electrode structure from an admixture paste subjected to a calendering process are influenced by the calender direction. To obtain electrode structures of a desired low basis weight requires a secondary calendering step performed in a direction reverse or orthogonal to that used to form the initial sheet tape. Orthogonal or reverse feed of the electrode active admixture provides for fibrillation of the fluoro-polymeric binder in other than the initial direction. This lets the binder spread in directions transverse to the initial direction to form the low basis weight electrode active structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.