Hua-bao Yang, Liang Wu, Bin Jiang, Bin Lei, Ming Yuan, Hong-mei Xie, Andrej Atrens, Jiang-feng Song, Guang-sheng Huang, and Fu-sheng Pan, Discharge properties of Mg-Sn-Y alloys as anodes for Mg-air batteries, Int. J. Miner. Metall. Mater. https://doi.org/10.1007/s12613-021-2258-6
Cite this article as:
Hua-bao Yang, Liang Wu, Bin Jiang, Bin Lei, Ming Yuan, Hong-mei Xie, Andrej Atrens, Jiang-feng Song, Guang-sheng Huang, and Fu-sheng Pan, Discharge properties of Mg-Sn-Y alloys as anodes for Mg-air batteries, Int. J. Miner. Metall. Mater. https://doi.org/10.1007/s12613-021-2258-6
Research Article

Discharge properties of Mg-Sn-Y alloys as anodes for Mg-air batteries

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  • Received: 28 July 2020Revised: 21 January 2021Accepted: 22 January 2021Available online: 26 January 2021
  • Mg-Sn-Y alloys with different Sn contents (wt%) were assessed as anode candidates for Mg-air batteries. The relationship between microstructure (including the second phase, grain size, and texture) and discharge properties of the Mg-Sn-Y alloys was examined using microstructure observation, electrochemical measurements, and galvanostatic discharge tests. The Mg-0.7Sn-1.4Y alloy had a high steady discharge voltage of 1.5225 V and a high anodic efficiency of 46.6% at 2.5 mA·cm-2. These good properties were related to its microstructure: small grain size of 3.8 μm, uniform distribution of small second phase particles of 0.6 μm, and a high content (vol%) of (11-20)/(10-10) orientated grains. The Scanning Kelvin Probe Force Microscopy (SKPFM) indicated that the Sn3Y5 and MgSnY phases were effective cathodes causing micro-galvanic corrosion which promoted the dissolution of Mg matrix during the discharge process.
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