The corrosion and discharge behavior of high-performance Mg-7Li-1Y alloy as anode for Mg-air batteries
Source abstract
Abstract
In this work, the microstructure, corrosion resistance and discharge properties of the as-extruded Mg-7Li-1Y alloy are systematically studied. The results show that the as-extruded Mg-7Li-1Y alloy is mainly composed of the α-Mg and β-Li phases with an obvious bimodal microstructure. Although the as-extruded Mg-7Li-1Y alloy exhibits relatively poor corrosion resistance with the impedance value of only 163.68 Ω·cm 2 and the corrosion current density of 9.5 × 10 −5 A/cm 2 in 3.5% NaCl solution, it possesses an outstanding discharge performance with a discharge voltage of 1.35 V and a high anode utilization rate of 59% at the current density of 10 mA/cm 2 . Meanwhile, it has a high specific energy density with about 1870 mWh·g −1 at the current density of 10 mA/cm 2 . The analysis indicates that the β-Li phase, low hydrogen evolution reaction and the unique morphologies of discharge products are responsible for the improvement of the electrochemical activity and the discharge performance of the Mg-7Li-1Y alloy.
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Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Hydrogen Storage and Materials · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
Show source-provided references
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