Interface and energy band manipulation of Bi2O3-Bi2S3 electrode enabling advanced magnesium-ion storage  

作　　者：Qiang Tang Yingze Song Xuan Cao Cheng Yang Dong Wang Tingting Qin Wei Zhang 

机构地区：[1]State Key Laboratory of Environment-Friendly Energy Materials,Tianfu Institute of Research and Innovation,School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang,Sichuan 621010,PR China [2]Institute of Materials Research,Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China [3]State Key Laboratory of Chem/Bio-Sensing and Chemometrics,Advanced Catalytic Engineering Research Center of the Ministry of Education,College of Chemistry and Chemical Engineering,Hunan University,Changsha,Hunan 410082,PR China [4]Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400714,PR China

出　　处：《Journal of Magnesium and Alloys》2024年第9期3543-3552,共10页镁合金学报（英文）

基　　金：supported by the National Natural Science Foundation of China(52172239);Project of State Key Laboratory of Environment-Friendly Energy Materials(SWUST,Grant Nos.22fksy23 and 18ZD320304);the Frontier Project of Chengdu Tianfu New Area Institute(SWUST,Grand No.2022ZY017);Chongqing Talents:Exceptional Young Talents Project(Grant No.CQYC201905041);Natural Science Foundation of Chongqing China(Grant No.cstc2021jcyj-jqX0031);Interdiscipline Team Project under auspices of“Light of West”Program in Chinese Academy of Sciences(Grant No.xbzg-zdsys-202106).

摘　　要：Rechargeable magnesium-ion(Mg-ion)batteries have attracted wide attention for energy storage.However,magnesium anode is still limited by the irreversible Mg plating/stripping procedure.Herein,a well-designed binary Bi_(2)O_(3)-Bi_(2)S_(3)(BO-BS)heterostructure is fulfilled by virtue of the cooperative interface and energy band engineering targeted fast Mg-ion storage.The built-in electronic field resulting from the asymmetrical electron distribution at the interface of electron-rich S center at Bi_(2)S_(3) side and electron-poor O center at Bi_(2)O_(3) side effectively accelerates the electrochemical reaction kinetics in the Mg-ion battery system.Moreover,the as-designed heterogenous interface also benefits to maintaining the electrode integrity.With these advantages,the BO-BS electrode displays a remarkable capacity of 150.36 mAh g^(−1) at 0.67 A g^(-1) and a superior cycling stability.This investigation would offer novel insights into the rational design of functional heterogenous electrode materials targeted the fast reaction kinetics for energy storage systems.

关 键 词：Magnesium-ion battery Bi2O3-Bi2S3 heterostructure Interface and energy band engineering Electrochemical reaction kinetics Electrode integrity 

分 类 号：O646[理学—物理化学] TM912[理学—化学]