NiO and magnetic CuFe2O4-based composite electrocatalyst for enhanced oxygen evolution reaction
Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, 11671, Riyadh, Saudi Arabia
2 Department of Physics, College of Science, Jazan University, 45142, Jazan, Saudi Arabia
3 Department of Physics, College of Science, Taif University, P.O. Box 11099, 21944, Taif, Saudi Arabia
4 Chemistry Department, Faculty of Science, Taif University, P.O.Box 11099, Al-Hawiah, Taif City, Saudi Arabia
5 Department of Chemistry, College of Science, Jazan University, 45142, Jazan, Saudi Arabia
6 Department of Physics, Central University of Punjab, 151401, Bathinda, India
Accepted: 30 August 2023
Published online: 13 September 2023
The 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.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.