Hydrothermal synthesis of InSe and Ni‐doped InSe on nickel foam in basic media for oxygen evolution reaction

Abstract Simplifying water electrolysis systems and enhancing hydrogen production efficiency can be achieved by developing high‐performance electrocatalysts. This paper presents the synthesis of nickel‐doped indium selenide (Ni@InSe) on nickel foam (NF) through a hydrothermal reaction. The distinct three‐dimensional structure of NF acts as the reaction skeleton, facilitating gas diffusion and electron conduction. Different physical and electrochemical techniques successfully characterize the synthesized materials. InSe carries 0.10043 s − 1 , while the doped material Ni@InSe carries 0.1308 s − 1 TOF values. The XRD results show that InSe and Ni@InSe exhibited crystal sizes of about 45 and 30 nm, respectively. InSe and Ni@InSe revealed an overpotential of 349 and 260 mV at 10 mA·cm −2 current density through a minor Tafel slope value of 70 and 35 mV·dec −1 , respectively, within 1.0 M KOH electrolyte. Doped material also exhibits excellent stability as well. These extraordinary results are owing to the extremely crystalline nature, several active sites, great electrical conductivity, and porosity of the synthesized material, which refers it to its use in different energy‐related fields.