Formulation of zinc negative electrode for rechargeable cells having an alkaline electrolyte
US7033700B2 · kind B2 · utility
2Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2004 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Nov 1, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A zinc electrode is provided for use in electrochemical cells having an alkaline electrolyte and high cycle life. The zinc electrode comprises a mixture of zinc oxide together with an inorganic fibre which contains silica and alumina. Preferably, the composition of the inorganic fibre is in the range of 80% to 99% alumina, and 1% to 20% silica. Typically, the zinc electrode will further comprise an inorganic fibre additive in the range of 2% to 15% by weight of the zinc oxide electrode. Also, the zinc electrode will typically further include 2% up to 10% of bismuth oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.