Electrochemical behavior and discharge performance of as-rolled precipitate-free Mg-Sn alloy as anode for Mg-air batteries  

镁空气电池用无析出相轧制在Mg-Sn合金阳极材料的电化学行为及放电性能

作　　者：Xu LI Wei-li CHENG Jian LI Fei-er SHANGGUAN Hui YU Li-fei WANG Hang LI Hong-xia WANG Jin-hui WANG Hua HOU 李旭;程伟丽;李戬;上官菲儿;余晖;王利飞;李航;王红霞;王金辉;侯华(太原理工大学材料科学与工程学院,太原030024;青海大学盐湖化工综合研究中心开放项目,西宁810016;河北工业大学材料科学与工程学院,天津300132;中北大学材料科学与工程学院,太原030051)

机构地区：[1]School of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China [2]The Open Project of Salt Lake Chemical Engineering Research Complex,Qinghai University,Xining 810016,China [3]School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300132,China [4]School of Materials Science and Engineering,North University of China,Taiyuan 030051,China

出　　处：《Transactions of Nonferrous Metals Society of China》2025年第3期832-848,共17页中国有色金属学报(英文版)

基　　金：partially supported by the National Natural Science Foundation of China(No.51901153);Shanxi Scholarship Council of China(No.2019032);the Natural Science Foundation of Shanxi,China(No.202103021224049);the Shanxi Zhejiang University New Materials and Chemical Research Institute Scientific Research Project,China(No.2022SX-TD025)。

摘　　要：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.在573 K下通过轧制成功制备一种具有均匀等轴晶粒结构的新型无析出相Mg-0.1Sn阳极材料。电化学测试结果表明,Mg-0.1Sn合金表现出较强的阳极溶解动力学。用该阳极组装的镁空气电池在0.5 mA/cm^(2)时的放电电压为1.626 V,在10 mA/cm^(2)时阳极效率为58.17%,能量密度为1730.96 mW/h。这种性能归因于阳极表面充足的有效反应面积抑制了块效应,以及由于均匀的基面织构而减弱了自腐蚀。

关 键 词：Mg-air battery Mg-Sn anode grain structure electrochemical behavior discharge performance 

分 类 号：TG1[金属学及工艺—金属学]