One-Pot Hydrothermal Synthesis of Ti3C2 (MXene)-CoS2 Nanocomposite as a Bifunctional Electrocatalyst (HER/OER) for a Clean Environment

The demand for green and clean technology motivates the research community to find a novel electrocatalyst for overall water-splitting. Therefore, in this study, we developed a hybrid non-noble metal catalyst nanocomposite of Ti 3 C 2 –CoS 2 (TC-CS) as a bifunctional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The nanocomposite shows crushed nanosheets of Ti 3 C 2 sprinkle on the CoS 2 (CS) surface thus increasing the electrochemically active surface area of the catalyst. The nanocomposite exhibits a low overpotential of 276 mV for HER and 376 mV for OER with a Tafel slope of 159 mV dec −1 and 22 mV dec −1 . This new kind of MXene composite will create a revolution in future energy technology.