Improved electrocatalytic performance of NdCoO3/rGO for oxygen evolution reaction

An important concern in present research is the enhancement of an electrochemical water oxidation mechanism that can produce clean energy in a more cost-effective, efficient and reliable manner. A key aspect of this study is the generation of electrocatalysts that are both affordable and long-lasting. Cost-effective metal oxides are more advantageous than other media for the oxygen evolution reaction (OER) in basic electrolytes. Due to their impressive electrical properties and the potential for enhanced performance, perovskite-based composites have become highly valuable for the water oxidation reaction. In this report, we described the synthesis of rGO@NdCoO₃ using a sonication process employed toward the OER process. Furthermore, the rGO@NdCoO₃ composite demonstrated a very favorable overpotential (η) of 216 mV at current density (C_d) of 10 mA/cm² and decreased Tafel slope (39 mV/dec). It remains durable for 35 h and even after going through 2000^th cycles. The composite of rGO@NdCoO₃ demonstrated various advantageous effects, such as decreased overpotential, enhanced catalytic C_d, improved charge transfer kinetics and increased ECSA value of 581.25 cm². Based on the research, it is evident that the fabricated material demonstrated exceptional efficiency and durability as an electrocatalyst in energy conversion systems.