Article 2025 · 7 citations

Microwave-Assisted synthesis of CuxFe100-x/Carbon aerogel (x=0, 30, 50, 70) with enhanced Electrocatalytic activity towards oxygen evolution reaction

Samanci, Meryem, Asim, Muhammad, Hussain, Akbar, Janjua, Naveed Kausar, Bayrakceken, Ayse

Abstract

A simple and efficient microwave-assisted synthesis route was adopted for carbon aerogel (CA)-supported Cu and Fe catalysts for OER in alkaline media. Catalysts were characterized physically by ICP-MS, XRD, TEM, XPS, SEM, and EDX and electrochemically by CV, chronoamperometry, and EIS. The catalyst having the composition of Cu30Fe70/CA showed excellent activity towards OER with low overpotential (345 mV) and Tafel slope (92.5 mV dec-1). Diffusion coefficient (D degrees = 2.1 x 10- 8 cm2 s-1), mass transport coefficient (mT = 2.8 x 10-4 cm s- 1), heterogeneous rate constant (k degrees = 5.7 x 10-4 cm s- 1), and electrochemically active surface area (0.0167 cm2) were obtained for Cu30Fe70/CA modified glassy carbon electrode. CV response in the non-faradic region showed that Cdl and electrochemical surface area (ECSA) of Cu30Fe70/CA increased 34 times compared to Fe/CA. This work suggests that adding up an optimum amount of Cu to the Fe/CA nanocomposite offers a cost-effective and efficient electrocatalyst for OER.

Keywords

Water oxidation Oxygen evolution reaction Carbon aerogel Cu-Fe catalyst Cyclic voltammetry Electrochemical surface area FE OXIDE CATALYSTS BIFUNCTIONAL ELECTROCATALYST GRAPHENE AEROGEL CU PERFORMANCE REDUCTION NI OXIDATION CO HYDROGENATION

WoS Categories

Chemistry, Analytical Electrochemistry

Sustainable Development Goals

Affordable and Clean Energy

Citation

Journal: JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Year: 2025
Volume: 976
ISSN: 1572-6657
eISSN: 1873-2569
DOI: 10.1016/j.jelechem.2024.118811
WoS UID: WOS:001361405400001

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