Formulation of zinc negative electrode for rechargeable cells having an alkaline electrolyte
US6811926B2 · kind B2 · utility
12Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 2003 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | May 6, 2023 |
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 fiber which contains silica and alumina. Preferably, the composition of the inorganic fiber is in the range of 80% to 99% alumina, and 1% to 20% silica. Typically, the zinc electrode will further comprise an inorganic fiber 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.