Nitrogen and Oxygen Functionalization of Multi?Walled Carbon Nanotubes for Tuning the Bifunctional Oxygen Reduction/Oxygen Evolution Performance of Supported FeCo Oxide Nanoparticles

The combination of nanostructured transition metal oxides and carbon materials is a promising approach to obtain inexpensive, highly efficient, stable bifunctional electrocatalysts for the oxygen reduction (ORR) evolution (OER) reactions. We present strategy improving ORR/OER activity supported FeCoOx nanoparticles by tuning properties multi-walled nanotubes (MWCNT) via nitrogen doping during their synthesis in presence ammonia subsequent oxidative functionalization. In-depth structural characterization indicates that treatment provides fine control dispersion localization MWCNT, while optimal degree leads increased due enhanced electrical conductivity as well improved catalyst stability, both OER ORR conditions, formed two different routes. findings reported can be strategically considered design high-performance reversible electrocatalysts.