|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Magnesium Technology 2021
||Liquid Enhanced Ga-Sn Alloy Anode for RMBs
||Jiawei Liu, Chao Song, Yuan Yuan, Dajian Li, Fusheng Pan
|On-Site Speaker (Planned)
The major problem of using pure Mg metal as anode of rechargeable magnesium batteries (RMBs) is the passive films formed in interface of anode and the polar organic electrolytes, which can block Mg ion in their migration towards the electrode surface. Therefore, Metallic anodes are proposed as the promising substitutes for a reversible electrode. . In this work, Ga-Sn binary alloys were prepared using a simple method. The high specific capacity, good cycling stability (more than 200 cycles) and great rate capability in conventional electrolyte were observed. The superior electrochemical performance of the Ga-Sn alloy-type anode is attributed to the reversible solid-liquid phase transformation at room temperature during cycling which can significantly improve the transport kinetics of Mg-ion. Meanwhile, the electrochemical mechanism was clarified by Ex-situ X-ray diffraction and transmission electron microscopy. The present investigation provides a new route to the development of metallic anode for magnesium-ion batteries.