lectrochemical Properties Evaluation of a Novel Mg Alloy Anode on 1Mg Air Batteries

摘要

Magnesium alloy is considered an environmentally friendly material that contains none of mercury,lead and chromate. This study aims to evaluate the performance of the new magnesium (Mg-Zn-In-Sn)alloy by adding elements Zn-In-Sn in AZ91 which are established by orthogonal design andmanufactured by two roll continue casting methods, in order to improve the electrochemical propertiesof magnesium alloy, and then determine the application of Mg-Zn-In-Sn alloy on the air batteries. Theelectrochemical properties of magnesium air battery are measured to investigate the practical use ofMg-Zn-In-Sn alloy anode. Magnesium and zinc mixed button battery, as a kind of magnesium airbattery is developed to measure the continuous discharge curves. And the discharge voltage iscalculated by the concentrations of magnesium ion, which are measured via inductively coupledplasma (ICP) analysis and FACSIMILE software simulation. The comparison of pure magnesium,AZ31, AZ91 and Mg-Zn-In-Sn alloy anodes used in the magnesium fuel cell vehicle model wereperformed. The results show that Mg-Zn-In-Sn alloy anode has the most negative and stable opencircuit potential used on the air battery. The stable discharge of magnesium and zinc mixed buttonbattery is more than 60 hours. And the mechanism of corrosion reactions in magnesium and zincmixed button battery is certificated by electrochemical calculation. Furthermore the speed ofmagnesium fuel cell vehicle model with Mg-Zn-In-Sn alloy anode is higher than the one with otheralloy anodes. It is investigated that Mg-Zn-In-Sn alloy anode is suitable to use on the air batteries bythis paper.