Abstract
Mg-6wt.%Al-1wt.%Sn alloys under different conditions are prepared. Primary magnesium-air batteries are assembled using such experimental Mg-Al-Sn alloys as anodes. The discharge behaviors of different alloys are investigated in 3.5 wt.% NaCl solution. The results show that the solution treatment can facilitate the homogeneous distribution of alloy elements and reduce the accumulation of discharge products. The magnesium-air battery based on the solution-treated Mg-Al-Sn anode presents higher operating voltage and more stable discharge process than those on the as-cast and the aged ones. Although the solution treatment cannot effectively improve the capacity density and the anodic efficiency of the experimental Mg-Al-Sn alloy, it is an effective approach to increasing the power and the energy density during discharge process. Especially at the applied current density of 30 mA cm−2 for 5 h, the solution-treated anode supplies 1.212 V average operating voltage, the anode energy density reaches 1527.2 mWhg−1, while the cast one is 1481.3 mWhg−1 and the aged one is 1478.8 mWhg−1.
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Acknowledgment
This work was supported by the Fundamental Research Funds for the Central Universities of Central South University Project, China (2014zzts019). The authors acknowledge the Project (81472058) supported by the National Natural Science Foundation of China and The financial support of the 2015 ShanDong province project of outstanding subject talent group.
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Xiong, H., Zhu, H., Luo, J. et al. Effects of Heat Treatment on the Discharge Behavior of Mg-6wt.%Al-1wt.%Sn Alloy as Anode For Magnesium-Air Batteries. J. of Materi Eng and Perform 26, 2901–2911 (2017). https://doi.org/10.1007/s11665-017-2733-4
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DOI: https://doi.org/10.1007/s11665-017-2733-4