Effect of using different reducing agents on the thermal, structural, morphological and electrical properties of aluminium-doped MgMn2O4 cathode material for magnesium ion cells

• Published in: Journal of materials science. Materials in electronics Vol. 33; no. 10; pp. 8003 - 8015
• Main Authors: Rosli, R., Othman, L., Harudin, N., Kufian, M. Z., Mahat, A. M., Osman, Z.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-04-2022; Springer Nature B.V
• Subjects: Aluminum; Cathodes; Characterization and Evaluation of Materials; Chemistry and Materials Science; Citric acid; Electric cells; Electrical properties; Electrochemical analysis; Electrode materials; Electrolytic cells; Emission analysis; Energy storage; Field emission microscopy; Lithium-ion batteries; Magnesium; Materials Science; Morphology; Optical and Electronic Materials; Reducing agents; Self propagation; Thermogravimetric analysis; Triethanolamine; Voltammetry
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-022-07951-1

Magnesium (Mg) ion cell is a promising candidate as energy storage instead of lithium-ion cell due to its advantages such as naturally abundant, low cost, nontoxic and atmospherically stable. However, the applications of Mg-ion cells in many devices were hindered due to the difficulty in selecting cathode material that can reversibly intercalate Mg-ion into host material. In this work, the cathode materials of MgMn
2
O
4
doped with aluminium (Al) were prepared and characterized. These materials were synthesized by using self-propagating combustion method and the precursors obtained were annealed at temperature of 700 °C for 6 h. Triethanolamine and citric acid were used as the reducing agents. The cathode materials were characterized in terms of their thermal, structural morphological and elemental properties by using thermogravimetric analysis, X-ray diffraction, field emission scanning electron microscopy and energy-dispersive X-ray, respectively. To study the electrochemical properties and stability of the cathode materials, linear sweep voltammetry and cyclic voltammetry measurements were performed using 1 M magnesium trifluoromethanesulfonate in EC:DME (1:1) as an electrolyte. The performance of Mg-ion cell with optimized cathode material was studied by galvanostatic charge–discharge test.