Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent
1994-10-27
1996-10-29
Bos, Steven
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
429222, 429223, C01G 5100, C01G 5300, C01G 900, C01G 1100
Patent
active
055694446
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.
REFERENCES:
patent: 3951686 (1976-04-01), Ness et al.
patent: 3988263 (1976-10-01), Hansford
patent: 4844999 (1989-07-01), Oshitani et al.
Perry's Chemical Engineers' Handbook, 5th edition, pp. 19-3 to 19-10, 1973.
Blanchard Philippe
Klein Jean-Paul
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