La ricerca del Dipartimento è sulla copertina di ChemElectroChem
ChemElectroChem ha dedicato la Front Cover di un suo numero del 2019 (Volume 6, Issue 24) ad un'articolo frutto del lavoro di ricerca del nostro dipartimento:
Enhancing Oxygen Reduction Reaction Catalytic Activity Using a Sub-Stoichiometric CaTiO3-∂ Additive
L'articolo porta le firme di Lucia Mazzapioda, Carmelo Lo Vecchio, Annalisa Paolone, Antonino Salvatore Aricò, Vincenzo Baglio, and Maria Assunta Navarra.
Abstract
Platinum scarcity and its high cost have led to the requirement of alternative materials catalysing the oxygen reduction reaction (ORR), which is the main rate-determining step occurring in electrochemical devices, including metal-air batteries and fuel cells. We report a study on a sub-stoichiometric calcium titanate (CaTiO3-δ, CTO) compound used as promoter for the ORR in order to reduce the Pt loading and improve its electrocatalytic activity. Composite catalysts based on Pt/C with different amounts of CTO were prepared and their activity was investigated by rotating disk electrode (RDE). The obtained results proved a higher catalytic activity for the composite electrode, with respect to pure Pt/C, in terms of electrochemically active surface area, oxygen reduction current density, onset potential and stability.
