Anticorrosion and discharge performance of calcium and neodymium co-doped AZ61 alloy anodes for Mg-air batteries  

作　　者：Baosheng Liu Ang Gao Zhechao Zhang Muhun He Ben Bin Xu Xuetao Shi Pengpeng Wu Sijie Guo Mohammed A.Amin Eman Ramadan Elsharkawy Zhanhu Guo 

机构地区：[1]School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China [2]Shaanxi Key Laboratory of Macromolecular Science and Technology,School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi’an 710072,China [3]Department of Mechanical and Civil Engineering,Faculty of Engineering and Environment,Northumbria University,Newcastle Upon Tyne NE18ST,UK [4]Department of Chemistry,College of Science,Taif University,P.O.Box 11099,Taif 21944,Saudi Arabia [5]Department of Chemistry,Faculty of Science,Northern Border University,Arar,Saudi Arabia

出　　处：《Journal of Materials Science & Technology》2024年第26期132-145,共14页材料科学技术(英文版)

基　　金：supported by the Key Scientific Re-search Project in Shanxi Province(Grant No.202102050201003);the Central Guiding Science and Technology Development of Local Fund(grant No.YDZJSK20231A046),;the National Natural Sci-ence Foundation of China(Grant Nos.52071227,and 52275356);the Deanship of Scientific Research at Northern Border University,Arar,KSA for funding this research through project No.NBU-FPEJ-2024-249-01.

摘　　要：Calcium(Ca)and neodymium(Nd)were introduced in the AZ61 alloy as alloying elements.The microstructure,corrosion behavior,and discharge properties of AZ61-1Nd-xCa(x=0,0.5 wt.%,1 wt.%,2 wt.%)alloys as anodes for Mg-air batteries were systematically investigated.The results indicated that the AZ61-1Nd-1Ca alloy exhibits the best corrosion resistance during electrochemical experiments and hydrogen evolution tests.Discharge performance tests showed that the AZ61-1Nd-1Ca alloy exhibits the best specific capacity(1193.6 mAh g^(-1)),energy density(1893.7 mWh g^(-1)),anode efficiency(60.3%),and cell voltage(1.246 V)at higher current densities.This is mainly attributed to the addition of Ca element,which refines the grain size of the alloy and increases the grain boundary area.In addition,Al_(2)Nd and Al_(2)Ca phases have similar corrosion mechanisms in the cross-section of the extruded alloy.The precipitated granular Al_(2)Ca phase is uniformly dispersed on the substrate and acts as a physical barrier.This not only enhances the corrosion resistance of the alloy but also improves the anode efficiency of the alloy during discharge.

关 键 词：Mg alloy Ca addition Mg-air battery Corrosion behavior Discharge performance 

分 类 号：TG1[金属学及工艺—金属学]