AgS nanoflakes decorated over rGO nanosheets: a sustainable and highly efficient electrocatalyst for oxygen evolution reaction

Energy is the basic need of world, and in this modern era to achieve global need, electrochemical water splitting knwon as process through which world can fulfill their energy requirements, but an efficient and affordable electrocatalyst is necessary for this process. Here, AgS/rGO nanocomposite was prepared using hydrothermal route as electrocatalyst for this (OER) process. The hydrothermal method leads to the development of nanocrystals having larger surface area and excellent morphology. The prepared nanocomposite undergoes physical and electrochemical testing. The physical characterization confirmed that AgS/rGO has a dynamic surface area (790.6 cm), providing more active sites; hence, more extensive electron transformation occurs. The electrochemical testing in an alkaline medium with three electrodes was used to know about electrocatalytic action of the prepared nanocomposite. The prepared nanocrystal achieved overpotential 179.56 mV, Tafel slope (31.6 mV dec) and TOF (1.40 s) with high durability. All these finding confirmed that the fabricated AgS/rGO is a strong electrocatalyst for OER.