Highly efficient bifunctional nanofiber catalysts with 3D hierarchical nanostructures as building blocks for rechargeable Zn–air batteries

Abstract

The imperative need for highly active bifunctional electrocatalysts accommodating both the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) has intensified for the development of advanced rechargeable Zn-air batteries...

Ultrafine Ir nanoparticles anchored on carbon nanotubes as efficient bifunctional oxygen catalysts for Zn–air batteries

“…2c), closely aligning with the theoretical value of 4.0, and hence suggesting a distinct four-electron ORR process. 23,24 Furthermore, the O–O stretching mode of surface-adsorbed superoxide (OOH ad ) was observed at 1154 cm −1 using in situ infrared spectroscopy (Fig. 2d).…”