Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1976-04-21
1978-04-25
Prescott, Arthur C.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204252, 204270, 204278, 204284, 204290R, C25B 116, C25B 126, C25B 1103, C25B 1110
Patent
active
040861554
ABSTRACT:
An electrolyzer comprising a cathode and an anode, disposed in an aqueous electrolyte bath, the electrodes each having at least one active surface directed substantially in facing relation to at least one active surface of the electrode of opposite polarity. At least one of the electrodes is permeable to gas and is the source of a gas release at the time of operation of the electrolyzer. At least one portion of the active surface of the electrode permeable to the gas is covered by a porous layer constituted by at least one refractory oxide which is electrically insulative and chemically inert with regard to the electrolyte and to the products formed at the time of electrolysis. The layer has a homogeneous distribution of pore sizes of a value sufficient for the electrolyte to traverse this layer and impregnate the electrode, the mean value of the radii of the pores of the insulating refractory oxide layer being at least as small as one-tenth of that of the pores of the electrode that it covers. The electrode and the oxide layer form an element of self-supporting structure, the oxide layer constituting a surface portion in contact with the electrolyte.
REFERENCES:
patent: 3284243 (1966-11-01), Von Sturm
patent: 3410783 (1968-11-01), Tomter
patent: 3485744 (1969-12-01), Schaffner
patent: 3607687 (1971-09-01), Grangaard
patent: 3763005 (1973-10-01), Butre et al.
patent: 3778307 (1973-12-01), Beer et al.
patent: 3926769 (1975-12-01), Gritzner
patent: 3975557 (1976-08-01), Kuchek
patent: 4005004 (1977-01-01), Seko et al.
Battelle (Memorial Institute)
Prescott Arthur C.
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