1 research outputs found
Fully Synthetic Approach toward Transition Metal–Nitrogen–Carbon Oxygen Reduction Electrocatalysts
We
report a nonpyrolytic chemical synthesis of model iron–nitrogen–carbon
electrocatalysts for oxygen reduction reaction (ORR) to elucidate
the role of Fe–N centers in the catalysis mechanism. The graphene-supported
and unsupported catalysts were analyzed in detail by X-ray spectroscopy
techniques. The electrochemical analysis was performed by linear sweep
voltammetry and square wave voltammetry in 0.5 M H<sub>2</sub>SO<sub>4</sub> and 0.1 M KOH electrolytes. In this article, with the use
of model catalysts, we manifest and confirm the difference in the
specific role of Fe–N active sites toward ORR in acidic and
alkaline environments