Discharge behavior and electrochemical properties of Mg-Al-Sn alloy anode for seawater activated battery

作者：Yu, Kun^*; Xiong, Han-qing; Wen, Li; Dai, Yi-long; Yang, Shi-hai; Fan, Su-feng; Teng, Fei; Qiao, Xue-yan

来源：Transactions of Nonferrous Metals Society of China, 2015, 25(4): 1234-1240.

DOI：10.1016/S1003-6326(15)63720-7

• magnesium anode material
• galvanostatic discharge
• anodic dissolution
• seawater activated batteries

Mg-Al-Sn alloy is one of the new developed anode materials for seawater activated batteries. The potentiodynamic polarization, galvanostatic discharge and electrochemical impedance spectroscopy of Mg-6%-Al-1%Sn and Mg-6%-Al-5%Sn (mass fraction) alloys in seawater were studied and compared with the commercial AZ31 and AP65 alloys. The results show that the Mg-6%-Al-1%Sn alloy obtains the most negative discharge potential of average -1.611 V with a electric current density of 100 mA/cm(2). EIS studies reveal that the Mg-Al-Sn alloy/seawater interfacial electrochemical process is determined by an activation controlled reaction. The assembled prototype batteries with Mg-6%-Al-1%Sn alloy as anodes and AgCl as cathodes exhibit a satisfactory integrated discharge properties.

• 出版日期2015-4
• 单位中南大学