Abstract
The MnSe/FeSe2 nanocomposite has been made using hydrothermal synthesis. The nanocomposite includes both MnSe and FeSe2 due to an equal molar ratio of Mn and Fe during synthesis, and the FeSe2 can considerably impact its electrocatalytic oxidation. The nanocomposite and the pure materials have been considered using various analytical instruments, and the nanocomposite has an onset potential of 1.511 V versus RHE and a Tafel slope of 43.90 mV dec(-1), which are most suitable for the electrochemical oxygen evolution reaction (OER). The MnSe/FeSe2 electrocatalyst outperforms the commercially available RuO2 catalyst. The efficient interaction of ferrous and manganese in OER electrocatalysis is seen without adding metal ions to the MnSe crystalline structure. Hence, the present composite catalyst is useful for future electrochemical applications.