METHOD FOR PRODUCING A LITHIATED OXIDE FOR A POSITIVE ELECTRODE OF AN ALKALINE BATTERY

摘要

A positive electrode of an alkaline-electrolyte battery comprising a nickel-based hydroxide and a lithiated oxide of formula LixMO2, where M represents at least one transition metal and 0.1 = x = 1, said lithiated oxide having a specific surface area measured by the BET technique of less than 40 m2/g and a particle size of less than 1 µm. A process for manufacturing a lithiated oxide of at least one transition metal comprising the steps consisting in: a) providing a powder of the hydroxide of said at least one transition metal; b) placing the powder in suspension in a lithium hydroxide solution in the presence of a stream of a gaseous oxidizer so as to form a lithiated oxide of said at least one transition metal, the lithium hydroxide concentration being at least equal to about 1M; c) adding a solution containing an oxidizing compound to the suspension of step b); d) filtering the suspension; and e) washing and drying the suspension.