@article{jmpc20241231,
author={{Kassoum, Sangar¨¦ and Brahima, Seyhi and Bamoro, Coulibaly},
title={Synthesis and Physicochemical Properties of Ordered Mesoporous Mn<SUB>0.6</SUB>Cu<SUB>0.4</SUB>Co<SUB>2</SUB>O<SUB>4</SUB> as High-performance Bifunctional Electrode for Zn-Air Batteries},
journal={Journal of Materials Physics and Chemistry},
volume={12},
number={3},
pages={42--48},
year={2024},
url={https://pubs.sciepub.com/jmpc/12/3/1},
issn={2333-4444},
abstract={The aim of the present study was to synthesize Mn<SUB>0.6</SUB>Cu<SUB>0.4</SUB>Co<SUB>2</SUB>O<SUB>4</SUB> 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 m<SUP>2</SUP>/g. By comparison, 91 m<SUP>2</SUP>/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 Co<SUP>2+</SUP>, Cu<SUP>2+ </SUP>and Mn<SUP>4+</SUP> species at the sample¡¯s surfaces, beneficial for good intrinsic activities of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).},
doi={10.12691/jmpc-12-3-1}
publisher={Science and Education Publishing}
}