Abstract: A positive electrode of an accumulator with an alkaline electrolyte comprising a nickel-based hydroxide and a lithiated oxide of formula LixMO2 wherein M represents at least one transition metal, 0.1?x?1, said lithiated oxide having a specific surface area as measured by the BET technique of less than 40 m2/g and a grain size of less than 1 ?m. A method for making a lithiated oxide of at least one transition metal comprising the steps of: a) providing a powder of an hydroxide of said at least one transition metal, b) suspending the powder in a lithine solution in the presence of a stream of a oxidizing gas in order to form a lithiated oxide of said at least one transition metal, the lithine concentration being at least equal to about 1 mol/L, c) adding to the suspension of step b) a solution containing an oxidizing compound, d) filtering the suspension, e) washing and drying the suspension.

Abstract: A positive electrode of an accumulator with an alkaline electrolyte comprising a nickel-based hydroxide and a lithiated oxide of formula LixMO2 wherein M represents at least one transition metal, 0.1?×?1, said lithiated oxide having a specific surface area as measured by the BET technique of less than 40 m2/g and a grain size of less than 1 ?m. A method for making a lithiated oxide of at least one transition metal comprising the steps of: a) providing a powder of an hydroxide of said at least one transition metal, b) suspending the powder in a lithine solution in the presence of a stream of a oxidizing gas in order to form a lithiated oxide of said at least one transition metal, the lithine concentration being at least equal to about 1 mol/L, c) adding to the suspension of step b) a solution containing an oxidizing compound, d) filtering the suspension, e) washing and drying the suspension.

Abstract: An electrode comprises a porous three-dimensional conductive support and at least one reinforcing metal band fixed along a longitudinal edge portion of the support and having a coefficient of elongation to rupture equal to at least 20% in a direction parallel to the edge portion of the support. Two longitudinal edge portions of the band are bent against the same face of the band, at least part of whose surface is pressed against the support.