Current Trends in Platinum-Based Ternary Alloys as Promising Electrocatalysts for the Oxygen Reduction Reaction: A Mini Review
Prateekshita Mukherjee, Bhalchandra Kakade, Anita Swami
Abstract
Fuel cells have drawn increased attention in recent times, emerging as an efficient alternative to conventional fuels. However, their high cost, the key factor, is inhibiting their commercialization. The recent developments and milestones achieved in the context of platinum (Pt)-based catalysts and their applications in fuel cells have been discussed in this review. This review delves into a comprehensive understanding of the insights received exclusively from a wide range of experimental results in designing an optimum catalyst best suited for the oxygen reduction reaction (ORR). Discussion has been mainly focused on the ternary alloys of Pt, which include their structure and compositional effects, and also the shape-controlled catalysts (nanowires, core–shells, and nanocages). Their stability, efficiency toward ORR, and interdependence between the tuned composition and surface modification on ORR kinetics have also been elucidated in this review.