John A Ripa, ~7432 Forestbrook Ct, Amherst, NY 14068

4354915, Oct 19, 1982

Dec 17, 1979

6/104235

John Z. O. Stachurski - Amherst NY
Dirk Pouli - Williamsville NY
John A. Ripa - Lancaster NY
Gerald F. Pokrzyk - Lewiston NY

Hooker Chemicals & Plastics Corp. - Niagara Falls NY

C25B 900
C25B 1106
C25B 1110

204242

A cathode for use in electrolytic processes and a process for preparing such cathodes is described. The cathode has a cathodically active surface comprising a codeposit of a first metal selected from the group consisting of iron, cobalt, nickel, and mixtures thereof, a leachable second metal or metal oxide preferably selected from the group consisting of molybdenum, manganese, titanium, tungsten, vanadium, indium, chromium, zinc, their oxides, and combinations thereof, and a third metal selected from the group consisting of cadmium, mercury, lead, silver, thallium, bismuth, copper and mixtures thereof. Such cathodes are prepared by initially forming a codeposit of the three metals or metal oxides, and subsequently removing at least a portion of the second metal or metal oxide from the codeposit. The second metal or metal oxide component can be conveniently removed by leaching, utilizing an alkaline solution. A substantially reduced hydrogen cathode overvoltage is obtained when the present cathodes are utilized in an electrolytic cell.

4421626, Dec 20, 1983

Jul 20, 1981

6/284851

John Z. O. Stachurski - Amherst NY
Dirk Pouli - Williamsville NY
John A. Ripa - Lancaster NY
Gerald F. Pokrzyk - Lewiston NY

Occidental Chemical Corporation - Niagara Falls NY

C25B 1106

204290R

A cathode for use in electrolytic processes and a process for preparing such cathodes is described. The cathode comprises a cathodically active surface layer, an intermediate binding layer, and a substrate. The intermediate binding layer comprises a codeposit of a first metal selected from the group consisting of iron, cobalt, nickel, and mixtures thereof, and a second metal or metal oxide selected from the group consisting of molybdenum, manganese, titanium, tungsten, vanadium, indium, chromium, zinc, their oxides, and combinations thereof. The intermediate binding layer is applied to the substrate from an electroplating solution containing a soluble sulfur-containing compound, such as an alkali metal thiocyanate or thiourea. The surface layer is applied to the intermediate binding layer and comprises a codeposit of said first and second metals or metal oxides and a third metal selected from the group consisting of cadmium, mercury, lead, silver, thallium, bismuth, copper and mixtures thereof.

4414064, Nov 8, 1983

Nov 19, 1980

6/208357

John Z. O. Stachurski - Amherst NY
Dirk Pouli - Williamsville NY
John A. Ripa - Lancaster NY
Gerald F. Pokrzyk - Lewiston NY

Occidental Chemical Corporation - Niagara Falls NY

C25D 550
C25B 1110
H01M 488
B05D 512

204 37R

A cathode for use in electrolytic processes and a process for preparing such cathodes is described. The cathode has a cathodically active surface comprising a codeposit of a first metal selected from the group consisting of iron, cobalt, nickel, and mixtures thereof, a leachable second metal or metal oxide preferably selected from the group consisting of molybdenum, manganese, titanium, tungsten, vanadium, indium, chromium, zinc, their oxides, and combinations thereof, and a third metal selected from the group consisting of cadmium, mercury, lead, silver, thallium, bismuth, copper and mixtures thereof. Such cathodes are prepared by initially forming a codeposit of the three metals or metal oxides, and subsequently removing at least a portion of the second metal or metal oxide from the codeposit. The second metal or metal oxide component can be conveniently removed by leaching, utilizing an alkaline solution. A substantially reduced hydrogen cathode overvoltage is obtained when the present cathodes are utilized in an electrolytic cell.