Active cobalt electrode for the cathodic evolution of hydrogen

Details Active cobalt electrode for the cathodic evolution of hydrogen Active cobalt electrode for the cathodic evolution of hydrogen

C - Chemistry, Metallurgy

25

D

204/196, 204/30

C25D 3/12 (2006.01) C25B 11/04 (2006.01) C25D 5/12 (2006.01) C25D 5/18 (2006.01) C25D 5/50 (2006.01) H01M 4/88 (2006.01)

Patent

CA 1106797

ABSTRACT OF THE DISCLOSURE: A method of producing a cobalt plated electrode is dis- closed. The method comprises subjecting an electrically conductive substrate to electrolytic plating in an aqueous bath containing cobalt ions and a reducing agent selected from the group consisting of hypophosphite salts, phosphite salts, formaldehyde and hydrazine in the concentration of 2 to 100 gpl. Ammonium ions and a weak complexing agent are preferably added to the bath. The current density is in the range of 0.2 to 150 mA/cm2 and the temperature of the bath between 20 and 80°C.

283384

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