High rate metal oxyhalide cells
US4613551A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1984 |
| Grant date | Sep 23, 1986 |
| Priority date | — |
| Expiry date | Sep 19, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A class of improved catalysts for use in high-rate active-metal non-aqueous cells which show excellent performance enhancing properties are disclosed. These comprise a class of metal porphyrin complexes which catalyze the electrochemical reduction of oxyhalides. The preferred porphyrin compounds include tetraphenyl porphyrin (TPP) and tetramethoxyphenyl porphyrin (TMPP). The preferred complexed metals are cobalt and iron yielding (CoTPP), (FeTPP), CoTMPP) and (FeTMPP), respectively. A polymeric form of TPP complexed with cobalt (CoTPP)n or iron (FeTPP)n is extremely insoluble in the typical Li/SOCl.sub.2 cell electrolyte and may be used very successfully in active cell configurations is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.