Exploring the electrocatalytic potential of CdTiO3 for sustainable overall water splitting

The development of efficient, cost-effective, and stable bifunctional electrocatalysts for overall water splitting is of paramount importance in alkaline mediums. In this study, we report the synthesis of the CdTiO₃ nanoparticles using the simple low-temperature sol-gel approach. CdTiO₃ as an electrodic material exhibits enhanced catalytic performance, advantageous reaction kinetics, and remarkable longevity for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The nanostructured CdTiO₃ demonstrates the overpotentials of 270 and 320 mV to attain a current density of 10 mA cm^-2 for OER and HER in 1.0 M KOH electrolyte, respectively. It reveals the low Tafel slope values of 63 and 79 mV dec^-1 for OER and HER, respectively. This work proposes a sustainable strategy for developing enhanced bifunctional electrocatalysts for hydrogen fuel production via overall water splitting, which has the potential to replace noble metals in a wide range of renewable energy systems.