Rapid preparation of high-performance Mg2Sn thermoelectric materials and their unique role in metal-air batteries

• DOI: 10.1063/5.0254219
• Publication Date: 2025-02-27T14:44:56Z
• Authors: Xinpeng Luan; Haodong Liu; Shipeng Wu; Jun Wang

Magnesium-air batteries hold potential applications due to their high energy density and environmental friendliness. However, the formation of passivation films suboptimal standard electrode have been primary scientific challenges hindering rapid advancement magnesium-air batteries. This study develops Mg2Sn anode materials conceptualizes a mechanism leveraging superior thermoelectric properties enhance open-circuit voltage inhibit films. By employing self-designed magnesium saturation temperature smelting method, high-performance n-type p-type are synthesized rapidly in air. Notably, material exhibits peak power factor up 4.83 mW m−1 K−2 figure merit (ZT) exceeding 1. A unique Mg2Sn-air battery is engineered utilize effects for modulating built-in electric field. design not only compensates but also harnesses Seebeck electromotive force generated by suppress on surface, giving performance Mg2Sn, which tends deliquesce air, application prospect. It elucidates pathway utilizing synergistically electrochemical metal-air