In‐Situ Electrodeposition of Rhodium nanoparticles Anchored on Reduced Graphene Oxide nanosheets as an Efficient Oxygen Reduction Electrocatalyst

A simple, versatile, and cost‐effective one‐pot electrochemical deposition is used to fabricate rhodium (Rh) nanoparticles decorated surface of reduced graphene oxide (rGO) functionalized glassy carbon electrode (GCE) for oxygen reduction reaction (ORR) in alkaline media. The chemical and physical structure of the sample is probed via transmission electron microscopy, rotating disk electrode (RDE), X‐ray photoelectron spectroscopy, linear sweep voltammetry, and Raman spectroscopy. The synergistic effects between the unique properties of Rh nanoparticles and rGO creates such innovative hybrid that exhibits a catalytic activity comparable to that of the commercial platinum electrocatalyst (Pt/C). As a result, the as‐electrodeposited Rh@rGO hybrid exhibits outstanding ORR activity in alkaline media, as evidenced by a larger diffusion‐limited current, greater positive onset potential, much better stability and methanol tolerance than Pt/C under the same conditions. The rhodium‐reduced graphene oxide hybrid (Rh@rGO) was synthesized by electrochemical deposition on the surface of indium tin oxide glass (ITO) for oxygen reduction reaction (ORR).Based on LSV curve, the rGO nanosheet leads to a significant increase in the ORR electrocatalytic activity of Rh@rGO hybrid. The Rh@rGO‐mofied ITO electrode showed long term stability and excellent tolerance to methanol compared to Pt/C under the same conditions.