Physical vapor deposition of mixed-metal oxides based on Fe, Co and Ni as water oxidation catalysts
By Mazzi, A.; Bazzanella, N.; Orlandi, M.; Edla, R.; Patel, N.; Fernandes, R.; Miotello, A.
Published in Materials Science in Semiconductor Processing
NULL
2016
Abstract
Abstract Physical vapor deposition (PVD) techniques are proposed as high performing and easily tunable methods to synthesize mixed-metal oxides thin films as water oxidation catalysts (WOC). These techniques allow us to have a good control on the catalyst film surface morphology and crystallinity, with good adhesion of the catalysts on electrodes. Pure and binary metal oxides thin films based on Fe, Co and Ni were synthesized using electron beam deposition (EBD). {WOC} films are systematically studied through {SEM} microscopy, Raman spectroscopy and {XPS} analysis. Electrochemical characterization has been carried out to investigate the relevance of synergistic effects towards the water oxidation reaction. Among all the mixed oxides Ni-Fe oxide showed the best catalytic results.
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