Effects of Hot Rolling on the Electrochemical Behaviors and Discharge Performance of Az61-In Anodes for Seawater Activated Batteries

Abstract

In this research, corrosion behavior and discharge capabilities of the AZ61-In alloy experiencing hot rolling process have been discussed in detail. The results reveal that the introduction of indium to magnesium facilitates the dissolution of magnesium by augmenting a quantity of secondary phases, generating less-protective products. The corrosion resistance of AZI plus 50% rolling reduction is improved attributed to the preferred basal orientation and further recrystallization. Moreover, the average discharge potentials of AZI-50% can respectively reach -1.551 V and -1.234 V at 10 mA cm-2 and 50 mA cm-2, showing potential for application in seawater activated batteries.

Keywords: Magnesium anode, Alloying, Rolling, Seawater battery, Discharge properties, Electrochemical test