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