Effect of Solution-Treated on Electrochemical Properties of Az91 Magnesium Alloy Anode

The effect of solution-treated on the self-corrosion performance and discharge performance of AZ91 magnesium alloy as anode material was analyzed by microscopic characterization, immersion tests, electrochemical measurements, and dis-charge performance tests. The study shows that the beta-phase in the AZ91 magnesium alloy gradually dissolved in the matrix with the increase of the solution temperature, and the electrochemical activity of the magnesium alloy anode was signifi-cantly improved. Through the comparison of three different solution-treated processes, it is found that the AZ91 magnesium alloy has the most vigorous activity and better discharge performance after solution-treated of 415 C+12 h. In addition, the proportion and distribution of beta-phase AZ91 magnesium alloy have a direct impact on its discharge performance as an anode material.