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Ruthenium-Iridium Oxide Films Prepared by MOCVD and their Electrocatalytic Activity for Oxygen Evolution

Published online by Cambridge University Press:  01 February 2011

M.Z. Figueroa Torres ,
M. Hesiquio Garduño ,
E. M. Arce Estrada  and
J. R. Vargas García
M.Z. Figueroa Torres
Affiliation:
, [email protected], Mexico
M. Hesiquio Garduño
Affiliation:
[email protected]
E. M. Arce Estrada
Affiliation:
[email protected], Mexico
J. R. Vargas García
Affiliation:
[email protected], National Polytechnic Institute, Metallurgical Engineering, Dept of Metallurgical Eng, ESIQIE-IPN, Mexico 07300 D.F., Mexico, N/A, 75-874, Mexico, (52) (55) 5729-6000 ext 55270, (52) (55) 5389-2834
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Abstract

Ruthenium-iridium oxide films were prepared in an horizontal hot-wall MOCVD apparatus and their electrocatalytic activity was investigated in the oxygen evolution reaction. Metal-acetylacetonates were used as precursors and oxygen as the reactant gas. Appropriate deposition conditions for obtaining bi-metallic oxide films were found to be deposition temperature (Tdep), 673 K and total pressure (Ptot), 133.32 Pa. X-Ray diffraction (XRD), Rietveld refinement and scanning electron microscopy (SEM) results demonstrated that the MOCVD method is a viable alternative to grow RuxIr1−xO2 films consisted of a single-phase with a very homogeneous distribution of elements. The electrocatalytic activity of the RuxIr1−xO2 films was investigated by cyclic voltammetry and anodic polarization curves in a 0.5 M H2SO4 solution at room temperature. The single-phase Ru0.4Ir0.6O2 films showed to be very promising for the oxygen evolution reaction due to a synergistic effect.

Keywords

chemical vapor deposition (CVD) (deposition)Rucatalytic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 885: Symposium A – The Hydrogen Cycle – Generation, Storage and Fuel Cells , 2005 , 0885-A09-13
Copyright
Copyright © Materials Research Society 2006

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