Abstract
In this paper, we present experimental results on the preparation and the electrochemical characterization of electrocatalytic particles with homogeneous composition, modeled by Franco et al. [ J. Electrochem. Soc. , 156 , B410 (2009) ]. Preparation is made through the direct liquid injection metallorganic chemical vapor deposition technique previously developed at CEA, and electrochemical analysis is carried out by using a rotating disk electrode and membrane-assembled gas diffusion electrode. Degradation structural changes are characterized by using transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Optimal Co compositions are identified for better oxygen reduction reaction activity and durability, validating the modeling studies.
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