Process of obtaining a metal hydroxide powder and powder obtained by the process
US5569444A · kind A · utility
Inventors
Key dates
| Filing date | Oct 27, 1994 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Oct 27, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process of preparing a powder of metal hydroxides based on nickel hydroxide for an electrode of an electrochemical cell having an alkaline electrolyte. The process includes introducing a solution of salts of nickel and of cobalt and of cadmium and/or zinc into a reactor in a slow and continuous manner under good stirring conditions, together with a strong base and an ammonium salt. Proportions of the ingredients are determined so that the pH of the mixture is stabilized at a value of 9.2.+-.0.1, and the temperature is maintained between 80.degree. C. and 85.degree. C. Particles metal hydroxide precipitated from the reaction are filtered, washed, and dried.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.