BaQais, AmalShariq, MohammadAlmutib, EmanAl-Qasmi, NohaAzooz, R.E.Ali, Syed KashifHassan, K.F.Iqbal, Muzahir2024-01-212024-08-132024-01-212024-08-132023-09-132190544410.1140/epjp/s13360-023-04423-1https://kr.cup.edu.in/handle/32116/3781The biggest concerns confronting the modern world are the depletion of nonrenewable energy sources and rising global temperatures. The use of O2 as an alternative energy source offers a potential answer to these problems. Low-cost electrocatalysts are growing approach for electrocatalytic water splitting, such as oxygen evolution reaction (OER). Oxygen evolution reactions are tremendously well-catalyzed by inexpensive transition metal oxide-based nanostructures. Here, we present a new composite NiO/CuFe2O4 nanostructure and further investigate its potential for electrocatalytic OER applications. Microscopic and spectroscopic methods such as FE-SEM, XRD, XPS, and FTIR were utilized to explore the morphology and structural characteristics of the electrocatalyst. The composite NiO/CuFe2O4 catalyst demonstrates excellent electrochemical OER accomplishment with the overpotential of 297�mV for an alkaline medium to acquire the current density of 10�mA/cm2 and a low Tafel slope of 63�mV/dec?1 to confirm the faster reaction of the composite catalyst. The synergism between the metal ions Ni, Cu, and Fe makes the composite catalyst more efficient in its catalytic activity so; the as-prepared structure demonstrates higher electrocatalytic OER execution with cyclic stability and durability than its pristine constituents. The results show that the NiO/CuFe2O4 composite has the potential to act as an electrocatalyst for the splitting of water. � 2023, The Author(s), under exclusive licence to Societ� Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.en-USArticlehttps://link.springer.com/10.1140/epjp/s13360-023-04423-1