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Zhao, H.; Zhou, X. X.; Pan, L. Y.; Wang, M.; Chen, H. R.; Shi, J. L. Facile Synthesis of Spinel Cu1.5Mn1.5O4 Microspheres with High Activity for the Catalytic Combustion of Diesel Soot. RSC Advances 2017, 7 (33), 20451–20459.

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Synthesis and Physicochemical Properties of Ordered Mesoporous Mn0.6Cu0.4Co2O4 as High-performance Bifunctional Electrode for Zn-Air Batteries

1Département des Sciences et Technologies Agro-Industrielles, UFR Agriculture, Ressources Halieutiques et Agro-Industrie, Université de San – Pédro, BP 1800, San – Pédro, Côte d’Ivoire

2Département de Géosciences, UFR des Sciences Biologiques, Université Péléforo Gon Coulibaly, BP 1328, Korhogo, Côte d’Ivoire


Journal of Materials Physics and Chemistry. 2024, Vol. 12 No. 3, 42-48
DOI: 10.12691/jmpc-12-3-1
Copyright © 2024 Science and Education Publishing

Cite this paper:
Sangaré Kassoum, Seyhi Brahima, Coulibaly Bamoro. Synthesis and Physicochemical Properties of Ordered Mesoporous Mn0.6Cu0.4Co2O4 as High-performance Bifunctional Electrode for Zn-Air Batteries. Journal of Materials Physics and Chemistry. 2024; 12(3):42-48. doi: 10.12691/jmpc-12-3-1.

Correspondence to: Sangaré  Kassoum, Département des Sciences et Technologies Agro-Industrielles, UFR Agriculture, Ressources Halieutiques et Agro-Industrie, Université de San – Pédro, BP 1800, San – Pédro, Côte d’Ivoire. Email: kassoum.sangare@usp.edu.ci

Abstract

The aim of the present study was to synthesize Mn0.6Cu0.4Co2O4 electrocatalyst powder using nanocasting method with KIT6-100 silica and to investigate its chemical and physicochemical properties. Nanocasting process induced high oxide specific surface areas to the electrocatalyst, with BET surface value of 132 m2/g. By comparison, 91 m2/g was obtained by the classic solgel method. Pore size distribution investigation revealed a mesoporous structuration of the electrocatalyst synthetized by nanocasting route. This led to uniform pore size of ca. 6.1 nm whereas, a large distribution from 2 to 50 nm was found for solgel method. The uniform and controlled pore size contributed to effective penetration of the liquid electrolyte. X-ray diffraction (XRD) study revealed spinel lattice structure with large crystallites of about 8 nm. X-ray photoelectron spectroscopy (XPS) measurements confirmed the presence of metal adsorption sites for electrocatalytic reactions. It also showed the predominance of Co2+, Cu2+ and Mn4+ species at the sample’s surfaces, beneficial for good intrinsic activities of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).

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