Gaseous-diffusion electrode and electrochemical reactor using th

Details Gaseous-diffusion electrode and electrochemical reactor using th Gaseous-diffusion electrode and electrochemical reactor using th

1993-07-14

1995-06-13

Gorgos, Kathryn

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204290R, 204252, 204283, 204284, 204267, 204253, 204277, 204258, 204265, 204270, 429 40, 429 41, 429 42, 429 44, C25B 900, C25B 1100

Patent

active

054239672

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.

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