the present disclosure provides an electrode for an electrolysis device , which allows performance of a catalyst to be efficiently exhibited in an electrochemical reaction of reducing an electrolysis reactant to generate an electrolysis product material . specifically , a carbon fiber that has a structure in which the carbon fiber contains a part of and / or a whole of a catalyst particle is used as a cathode electrode to greatly improve adherence force of the catalyst particle and enable efficient generation of an electrolysis product material .