WATER ELECTROLYSIS DEVICE, MEMBRANE ELECTRODE JUNCTION, Ru-BASED NANOPARTICLE COUPLING CATALYST AND PRODUCTION METHOD OF Ru-BASED NANOPARTICLE COUPLING CATALYST LAYER, FUEL CELL, AND CATALYST FOR HYDROGENATION OF METHANE

摘要

PROBLEM TO BE SOLVED: To provide a water electrolysis device, a fuel cell, a membrane electrode junction, an Ru-based nanoparticle coupling catalyst layer and a production method thereof, and a method for the hydrogenation of methane that can enhance the efficiency of a catalyst with an excellent durability even in a state of being free of carbon carriers.SOLUTION: A water electrolysis device 1 of the present invention generates hydrogen and oxygen by electrolyzing water. The water electrolysis device 1 comprises: an electrolyte (solid polymer type electrolyte film 5, ionic conductor 4); an anode electrode 10 that touches the electrolyte; and a cathode electrode 20 for generating hydrogen gas, which touches the electrolyte and is connected to the anode electrode 10 via an external circuit. In the water electrolysis device, an Ru-based nanoparticle coupling catalyst 3 having an electron conductivity is applied to at least part of a surface of the anode electrode 10 touching the electrolyte, comprising a sintered compact to which Ru-included metal nanoparticles are connected.SELECTED DRAWING: Figure 4