Gaseous-diffusion electrode and electrochemical reactor using the same


Ontology type: sgo:Patent     


Patent Info

DATE

1995-06-13T00:00

AUTHORS

KUNIMATSU KEIJI , HASEGAWA NORIFUMI , FURUYA NAGAKAZU

ABSTRACT

There are provided a gaseous-diffusion electrode which can exhibit sufficient gas-supplying ability and gas-discharging ability and an excellent durability even when partly immersed in an electrolysis solution; and an electrochemical reactor using the gaseous-diffusion electrode. A porous membrane 15 which is permeable to gas but not to an electrolysis solution is fixed to the surface of the gaseous-diffusion layer 13 of a gaseous-diffusion electrode 11 obtained by joining a reaction layer 12 supporting a catalyst metal and a gaseous-diffusion layer 13 to each other, so as to cover the surface of the gaseous-diffusion layer 13. When a gas passageway member 17 serving as gas passageway to the gaseous-diffusion layer 13 is inserted between the surface of the gaseous-diffusion layer 13 and the porous membrane 15, the gas-supplying ability and the gas-discharging ability becomes greatly improved. When an electrochemical reactor is composed by immersing the thus composed gaseous-diffusion electrode partly in an electrolysis solution in a pressure vessel composed of a closed vessel, electrolysis or the like can be continuously carried out. More... »

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