The development of a cobalt oxide spinel structure overlayer on cobalt electrodes. A modified electrode surface of electrocatalytic interest

T. KESSLER; A. VISINTIN; M.R. GENNERO DE CHIALVO; W.E. TRIACA; A.J. ARVIA

JOURNAL OF ELECTROANALYTICAL CHEMISTRY - (Print)

ELSEVIER SCIENCE SA

Lugar: Amsterdam; Año: 1989 vol. 261 p. 315 - 329

1572-6657

A new electrochemical procedure to obtain spinel-type cobalt oxide overlayers on cobalt electrodes is presented. The procedure involves the application of periodic potential treatments to cobalt electrodes immersed in alkaline solutions. The optimal conditions for growing thick cobalt oxide overlayers were determined. The cobalt oxide overlayers were characterized by IR spectroscopy, EDAX, X-ray analysis and differential thermal analysis, and their catalytic activity for the oxygen evolution reaction was evaluated.