Study on the discharge performance of Mg-Sr alloy for magnesium-air battery anode
In this study,the corrosion resistance and discharge properties of five alloys of Mg-xSr(x=0.2wt％,0.5wt％,1wt％,2wt％and4wt％)as anode materials for magnesium-air batteries were systematically studied by electrochemical techniques and magnesium-air battery discharge test.The results show that the corrosion re-sistance and electrochemical activity of the alloy can be effectively enhanced when an appropriate amount of Sr is added to the magnesium alloy.Among the anodes studied,the Mg-2Sr anode had the highest and relatively sta-ble discharge voltage and the best discharge performance at all current densities,and had the highest anode effi-ciency of 68％at 40 mA/cm.With the further increase of Sr content,the excess second phase accelerates self-corrosion,and the corrosion resistance and discharge performance of the alloy decrease.
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