Preparation and electrochemical characterization of Ti/Ru(x)Mn(1-x)O2 electrodes

JOSÉ L. FERNÁNDEZ; MARÍA R. GENNERO DE CHIALVO; ABEL C. CHIALVO

JOURNAL OF APPLIED ELECTROCHEMISTRY

Kluwer Academic Publishers

Año: 2002 vol. 32 p. 513 - 520

0021-891X

DSA_ type electrodes of ruthenium–manganese mixed oxides (30 O at % Ru < 100) supported on titanium were prepared by the spray-pyrolysis technique, using Ru(NO)(OH)x(NO3)3_x and Mn(NO3)2 as precursors. Electrodes were characterized by SEM, XRD and cyclic voltammetry. Their behaviour as anode for the chlorine and oxygen evolution reactions was also evaluated by polarization curves. The stability of the mixed oxides was determined through accelerated tests of service life. It has been verified that the best performance on the apparent electrocatalytic activity of both reactions as well as on stability is achieved at a composition of about 70% Ru.