Abstract: A process for preparing a catalytic material of an electrode for electrochemical reduction reactions, said material comprising an active phase based on at least one group VIB metal and an electrically conductive support, which process is carried out according to at least the following steps: a) bringing water into contact with said electrically conductive support, b) bringing said wet support into contact with at least one metallic acid hydrate comprising at least one group VIB metal, of which the melting point of said metallic acid hydrate is between 20° C. and 100° C., the weight ratio of said metallic acid to said electrically conductive support being between 0.1 and 4, c) heating, with stirring, to a temperature between the melting point of said metallic acid hydrate and 100° C., d) carrying out a sulfurization step at a temperature of between 100° C. and 600° C.