Electrochemical behavior and discharge performance of as-rolled precipitate-free Mg−Sn alloy as anode for Mg−air batteries
Xu Li, Wei-li CHENG, Jian Li, Fei-er Shangguan, Hui Yu, Lifei Wang, Hang Li, Hongxia Wang, Jinhui Wang, Hua Hou
Abstract
A novel precipitate-free Mg−0.1Sn anode with a homogeneous equal-axis grain structure was developed and rolled successfully at 573 K. Electrochemical test results indicate that the Mg−0.1Sn alloy exhibits enhanced anode dissolution kinetics. A Mg−air battery prepared using this anode exhibits a cell voltage of 1.626 V at 0.5 mA/cm 2 , reasonable anodic efficiency of 58.17%, and good specific energy of 1730.96 mW·h/g at 10 mA/cm 2 . This performance is attributed to the effective reactive anode surface, the suppressed chunk effect, and weak self-corrosion owing to the homogeneous basal texture.
Topics & Concepts
AnodeMaterials scienceAlloyElectrochemistryMetallurgyChemical engineeringElectrodeChemistryEngineeringPhysical chemistryMagnesium Alloys: Properties and ApplicationsAluminum Alloys Composites PropertiesCorrosion Behavior and Inhibition