Defect Engineering:Can it Mitigate Strong Coulomb Effect of Mg^(2+)in Cathode Materials for Rechargeable Magnesium Batteries?  

作　　者：Zhengqing Fan Ruimin Li Xin Zhang Wanyu Zhao Zhenghui Pan Xiaowei Yang 

机构地区：[1]School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,People’s Republic of China [2]School of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,People’s Republic of China [3]School of Materials Science and Engineering,Tongji University,Shanghai 201804,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第1期135-159,共25页纳微快报（英文版）

基　　金：support of the National Natural Science Foundation of China(Grant No.22225801,22178217 and 22308216);supported by the Fundamental Research Funds for the Central Universities,conducted at Tongji University.

摘　　要：Rechargeable magnesium batteries(RMBs)have been considered a promising“post lithium-ion battery”system to meet the rapidly increasing demand of the emerging electric vehicle and grid energy storage market.However,the sluggish diffusion kinetics of bivalent Mg^(2+)in the host material,related to the strong Coulomb effect between Mg^(2+)and host anion lattices,hinders their further development toward practical applications.Defect engineering,regarded as an effective strategy to break through the slow migration puzzle,has been validated in various cathode materials for RMBs.In this review,we first thoroughly understand the intrinsic mechanism of Mg^(2+)diffusion in cathode materials,from which the key factors affecting ion diffusion are further presented.Then,the positive effects of purposely introduced defects,including vacancy and doping,and the corresponding strategies for introducing various defects are discussed.The applications of defect engineering in cathode materials for RMBs with advanced electrochemical properties are also summarized.Finally,the existing challenges and future perspectives of defect engineering in cathode materials for the overall high-performance RMBs are described.

关 键 词：Rechargeable magnesium battery Sluggish diffusion kinetic Defect engineering Cathode materials Ion migration 

分 类 号：TM912[电气工程—电力电子与电力传动]