Dealloying induced nanoporosity evolution of less noble metals in Mg ion batteries

作     者：Jiazheng Niu Meijia Song Ying Zhang Zhonghua Zhang Jiazheng Niu;Meijia Song;Ying Zhang;Zhonghua Zhang

作者机构：Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education)School of Materials Science and EngineeringShandong UniversityJingshi Road 17923Jinan 250061P.R.China 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2021年第9卷第6期

页      面：2122-2132页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financial support by National Natural Science Foundation of China(51871133) the support of Taishan Scholar Foundation of Shandong Province the program of Jinan Science and Technology Bureau(2019GXRC001) Department of Science and Technology of Shandong Province,China 

主　　题：Mg ion batteries Alloy-type anodes Dealloying Nanoporous metals Surface diffusivity 

摘      要：Rechargeable Mg ion batteries(MIBs)have aroused great interests,and using alloy-type anodes and conventional electrolytes offers an effective way to develop high energy density Mg battery ***,the dealloying-induced nanoporosity evolution of alloy-type anodes during the charging process has received less ***,using a magnetron-sputtered Mg;Bi;film as an example,we investigate its electrochemical dealloying and associated structural evolution in an all-phenyl-complex electrolyte by in-situ and ex-situ *** microstructures and length scales of nanoporous Bi can be facilely regulated by changing electrochemical parameters,and there exists a good linear correlation between the surface diffusivity of Bi and the applied current density/potential scan rate on a logarithm *** importantly,the self-supporting nanoporous Bi electrodes deliver satisfactory Mg storage performance and alloy-type anodes show good compatibility with conventional ***,the charging-induced dealloying in MIBs is a general strategy to fabricate nanoporous less noble metals like Sn,Pb,In,Cu,Zn and Al,which shows advantages over chemical dealloying in aqueous *** findings highlight the significance of nanoporosity evolution of alloy-type anodes during dealloying,and open opportunities for the fabrication of nanoporous reactive metals.