ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

NiCoFe–LDH/GO/Fe₃O₄ heterostructure array as a highly efficient electrocatalyst in oxygen evolution reaction

Abdollah Purhasan Heris and Zolfaghar Rezvani

Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran

E-mail: zrezvani@azaruniv.ac.ir

Received: 12 May 2023  Accepted: 14 July 2023

Abstract:

This work reports the synthesis of NiCoFe–LDH heterostructure arrays with GO/Fe₃O₄ and GO through a co-precipitation method. The structure, composition, and morphology of the heterostructure arrays were characterized by XRD, XPS, FT-IR, FESEM, TEM, EDX, and Brunauer–Emmett–Teller (BET) techniques. The NiCoFe–LDH/10%GO/Fe₃O₄ showed a higher electrocatalytic activity compared to other electrocatalysts. This electrocatalyst offered an overpotential of 186 mV, a Tafel slope of 88 mV/dec, and proper stability and electron transfer kinetics. Therefore, the NiCoFe–LDH/10%GO/Fe₃O₄ heterostructure array can be used as an appropriate OER catalyst.

Keywords: Layered double hydroxide; Graphene oxide; Electrocatalyst; Oxygen evolution reaction

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-02978-y

Chemical Papers 77 (11) 6797–6813 (2023)