Pt-Nanoparticles on ZnO/Carbon Quantum Dots: A Trifunctional Nanocomposite with Superior Electrocatalytic Activity Bosting Direct Methanol Fuel Cell and Zinc-Air Battery

A ternary PtNP-ZnO@CQDs nano-catalyst, made via a one-pot process, outdoes commercial catalysts in MOR, OER, and ORR. As a Zn–air battery cathode, it delivers high energy density and durability, showing great promise for future energy applications.