Příprava a charakterizace nových oxidových katalyzátorů pro palivové články

Khalakhan, Ivan

V Title: Preparation and Characterization of Novel Oxide Catalysts for Fuel Cell Applications Author: Mgr. Ivan Khalakhan Department/Institute: Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University Supervisor of the doctoral thesis: Prof. RNDr. Vladimír Matolín, DrSc., Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University Abstract: Present doctoral thesis focuses mainly on the morphological investigation of novel oxide catalysts prepared by magnetron sputtering deposition for fuel cell applications. Surface characterization techniques such as scanning electron microscopy (SEM), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS), were used in this work. In the first chapter, the influences of different preparation parameters on the morphology of CeO2, Au doped CeO2 and Pt doped CeO2 sputtered films were investigated. It was found that morphology and stoichiometry of the catalyst film is strongly dependent on the deposition parameters and the type of substrate. We have also shown that catalyst films prepared by magnetron co-sputtering of platinum and cerium oxide exhibit high catalytic activity as anode in proton exchange membrane fuel cell (PEMFC). High surface area, low platinum loading and excellent...

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