Selenium-doped mixed metal oxide nanoparticles decorated on g-C3N4 and MXene sheets as promising bifunctional oxygen electrocatalysts for rechargeable Zn–air batteries

The design of bifunctional electrocatalysts to conduct an appropriate oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) for high-performance zinc–air batteries is one of the most important challenges for sustainable energy storage devices.