Pd-supported Co3O4/C catalysts as promising electrocatalytic materials for oxygen reduction reaction
Peržiūrėti/ Atidaryti
Data
2022Autorius
Kepenienė, Virginija
Stagniūnaitė, Raminta
Rafique, Sidra
Vaičiūnienė, Jūratė
Jasulaitienė, Vitalija
Pakštas, Vidas
Sukackienė, Zita
Vilkauskaitė, Rasa
Tamašauskaitė-Tamašiūnaitė, Loreta
Norkus, Eugenijus
Metaduomenys
Rodyti detalų aprašąSantrauka
This paper describes the activity of PdCo3O4/C obtained by wet impregnation towards the oxygen reduction reaction (ORR). For this purpose, the Co3O4/C substrate was synthesized using the microwave irradiation heating method with further annealing of the substrate at 400 °C for 3 h (Co3O4/C-T). Then, the initial Co3O4/C substrate was impregnated with palladium chloride (Pd-Cl2-Co3O4/C), and then part of the obtained Pd-Cl2-Co3O4/C catalyst was annealed at 400 °C for 3 h (PdOCo3O4/C). The electrocatalytic activity of the prepared catalysts was investigated for the oxygen reduction reaction in alkaline media and compared with the commercial Pt/C (Tanaka wt. 46.6% Pt) catalyst. It was found that the annealed PdOCo3O4/C catalyst showed the largest ORR current density value of −11.27 mA cm−2 compared with Pd-Cl2-Co3O4/C (−7.39 mA cm−2) and commercial Pt/C (−5.25 mA cm−2).