Probing a new halogen-free electrolyte and Ba0.85Sm0.1TiO3 cathode for Mg battery applications

• Published in: Journal of materials science. Materials in electronics Vol. 32; no. 24; pp. 28781 - 28791
• Main Authors: Soliman, T. S., Hessien, M. M., Sheha, E.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.12.2021; Springer Nature B.V
• Subjects: Acetonitrile; Anodic protection; Cathodes; Characterization and Evaluation of Materials; Chemistry and Materials Science; Commercialization; Electrode materials; Electrolytes; Ion currents; Lithium; Lithium batteries; Magnesium; Materials Science; Optical and Electronic Materials; Polyvinyl alcohol; Product safety; Rechargeable batteries
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-021-07263-w

Rechargeable magnesium batteries with their low cost, high safety, and environment-friendly are considered a promising post-lithium battery. Develop suitable cathode material and an electrolyte are the greatest challenges facing their commercialization. Herein, a halogen-free electrolyte-based Mg(NO 3 ) 2 in co-solvent of acetonitrile and tetraethylene glycol dimethyl has been successfully synthesized for the first time. A solid polymer interface-based polyvinyl alcohol PVA, and Mg(O 3 SCF 3 ) 2 has been designed to protect the surface of the Mg anode from direct contact with the liquid electrolyte. The as-synthesized electrolytes with and without interface have been exhibited good Mg plating/stripping performance, high anodic stability up to >3 V (vs. Mg/Mg 2+ ), and high ionic conductivity of 0.11, 0.0036 mS/cm, respectively. The Ba 0.85 Sm 0.1 TiO 3 (BSTO) is designed and characterized. As a result, the Mg-BSTO battery was constructed with an initial discharge capacity up to 88 mAh/g and a charge capacity up to 20 mAh/g.