Method for preparing a catalytic material of an electrode for electrochemical reduction reactions prepared by electroreduction

A process for the preparation of a catalytic material of an electrode for electrochemical reduction reactions, said material comprising at least one active phase based on a metal from group VIb and an electroconductive support, which process comprises at least the following stages:

• a) a stage of electrolysis of at least one aqueous and/or organic solution comprising at least one precursor of the active phase comprising at least one metal from group VIb, in order to obtain a solution comprising at least one precursor comprising at least one partially reduced metal from group VIb;
• b) a stage of impregnation of said support with said solution obtained in stage a), in order to obtain a catalytic material precursor;
• c) a stage of drying said precursor obtained in stage b) at a temperature of less than 250° C., without subsequent calcination;
• d) a stage of sulfurization of the catalytic material precursor obtained in stage c) at a temperature of between 100° C. and 600° C.