Optimizing Oxygen Electrode Bifunctionality with Platinum and Nickel Nanoparticle-Decorated Nitrogen-Doped Binary Metal Oxides

• Published in: Processes Vol. 12; no. 3; p. 453
• Main Authors: Mladenović, Dušan, Aykut, Yasemin, Yurtcan, Ayşe B., Soylu, Gulin S. P., Santos, Diogo M. F., Miljanić, Šćepan, Šljukić, Biljana
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.03.2024
• Subjects: Air pollution; Atmospheric carbon dioxide; Carbon; Catalysis; Electrocatalysts; Electrode materials; Electrodes; Energy; Energy minerals; Fossil fuels; Fuel cells; Heat; Manganese oxides; Metal air batteries; Metal oxides; Nanoparticles; Nickel; Nickel oxides; Nitrogen; Oxygen; Oxygen evolution reactions; Rechargeable batteries; Regenerative fuel cells; St Louis Missouri; United States > US; Germany
• ISSN: 2227-9717; 2227-9717
• DOI: 10.3390/pr12030453

Developing bifunctional oxygen electrode materials with superior activity for oxygen reduction (ORR) and oxygen evolution (OER) reactions is essential for advancing regenerative fuel cell and rechargeable metal–air battery technologies. This present work deals with the synthesis and characterization of electrocatalysts containing Pt and Ni nanoparticles supported on nitrogen-doped mixed metal oxides (Mn2O3-NiO) and the systematic evaluation of their bifunctional ORR/OER performance in an alkaline medium. These electrocatalysts have been successfully synthesized by a simple and fast microwave method. PtNi/Mn2O3-NiO-N with a binary metal oxide-to-N ratio of 1:2 demonstrated the best performance among the studied materials regarding bifunctional electrocatalytic activity (∆E = 0.96 V) and robust stability.