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Ag/C catalysts with different loading were prepared using a colloidal route to obtain well dispersed catalysts on carbon, with a particle size close to 15nm. An amount of 20wt.% Ag on carbon was found to be the best loading in terms of current density and mass activity. The 20wt.% Ag/C catalyst was then studied and the kinetics towards ORR was determined and compared with that of a 20wt.% Pt/C catalyst...
Core-shell nanoparticles of Ni@Pt/C electrocatalysts have been prepared in different Pt:Ni atomic ratios ranging from 1:0.25 to 1:3 through a two-step strategy using ethylene glycol as a reducing agent. Their electrocatalytic activity for ethanol oxidation was investigated in alkaline medium. X-ray diffraction and transmission electron microscopy were employed to evaluate crystal structure and surface...
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