Electro-oxidation reconstitution of aluminium copper MOF-derived metal oxyhydroxides for a robust OER process

H A Alburaih; Sumaira Manzoor; M Abdullah; M N Ashiq; Salma Aman; Sergei V Trukhanov; Tatiana I Zubar; Zhipeng Sun; T A Taha; Alex V Trukhanov

doi:10.1039/d2ra07661f

Electro-oxidation reconstitution of aluminium copper MOF-derived metal oxyhydroxides for a robust OER process

RSC Adv. 2023 Mar 15;13(13):8736-8742. doi: 10.1039/d2ra07661f. eCollection 2023 Mar 14.

Authors

H A Alburaih¹, Sumaira Manzoor², M Abdullah³, M N Ashiq², Salma Aman², Sergei V Trukhanov^{4

5}, Tatiana I Zubar⁵, Zhipeng Sun⁶, T A Taha^{7

8}, Alex V Trukhanov^{4

5}

Affiliations

¹ Department of Physics, College of Science, Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh 11671 Saudi Arabia.
² Institute of Chemical Sciences, Bahauddin Zakariya University Multan 60800 Pakistan.
³ Department of Chemistry, Government College University Lahore Pakistan.
⁴ Smart Sensors Laboratory, Department of Electronic Materials Technology, National University of Science and Technology MISiS Moscow 119049 Russia.
⁵ Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus Minsk 220072 Belarus fix.tatyana@gmail.com.
⁶ School of Materials and Energy, Guangdong University of Technology, Guangzhou Higher Education Mega Center No.100 Waihuan Xi Road, Panyu District Guangzhou 510006 P. R. China.
⁷ Physics Department, College of Science, Jouf University P.O. Box 2014 Sakaka Saudi Arabia.
⁸ Physics and Engineering Mathematics Department, Faculty of Electronic Engineering, Menoufia University Menouf 32952 Egypt.

Abstract

It is common knowledge that the O₂ evolution reaction (OER) is a crucial half-reaction in the electrolysis of water. However, it is currently difficult to create inexpensive OER electrode materials in a way that is efficient, simple, and environmentally friendly. In this research, metal oxy-hydroxides with numerous oxygen defects (M-OOHv) are created at surface of Cu foam (CF) using a unique, straightforward electro-oxidation reconstitution (ER) process. Different spectroscopic and microscopy methods are used to analyse the electrode characteristics of Al₂Cu-MOF@M-OOHv-ER/CF; electrochemical measurements display a lower overpotential (η) of 366 mV @ 10 mA cm^-2 and a Tafel slope of 95.2 mV dec^-1 in 1.0 M KOH. X-Ray diffraction (XRD), scanning electron microscopy (SEM), and Raman studies confirm the phase transition of the metal-organic framework (MOF) to the M-OOH, which acts as the active site to boost the OER activity. Through spectroscopic and microscopic investigations, it is determined that the efficiency of bimetallic electrode materials and oxygen vacancies in the M-OOHv have an impact on the electron power density. The manufactured electrode material additionally showed good durability for 50 hours. As a result, the newly developed Al₂Cu-MOF@M-OOHv-ER/CF nanomaterial has greater potential for both electrolysis of water and other energy storage equipment.