Effects of Texture and Discharge Products on the Discharge Performance of Mg Anodes for Mg Air Batteries

Here, four representative Mg-3Al-1Zn (AZ31) anodes with different texture characteristics, i.e., ET0 degrees, ET30 degrees, ET60 degrees, and ET90 degrees, are assembled as the anodes for Mg-air batteries. The correlation between texture and discharge products and the influences of texture and discharge products on the discharge performance are studied. The results show that the discharge performance of the four anodes follows the order: ET90 degrees > ET60 degrees > ET30 degrees > ET0 degrees. The improved discharge performance is related to the two aspects: (i) the discharge activities of the (11-20)/(10-10) orientated grains are higher than those of the (0002) orientated grains, (ii) the discharge products formed on the (11-20)/(10-10) surface are more easily to fall off than those formed on the (0002) surface.