New platinum-nickel core-shell catalyst shows stability for oxygen reduction reactions

Electrocatalysis is a key technology for sustainable energy, and understanding how catalysts work is crucial for improving their performance. One of the challenges in using platinum (Pt) as a catalyst for the oxygen reduction reaction (ORR) in fuel cells is that it reacts too slowly and doesn't work efficiently enough. A promising solution is to adjust the surface of the catalyst to improve its activity.