典型文献
Atomic insights of electronic states engineering of GaN nanowires by Cu cation substitution for highly efficient lithium ion battery
文献摘要：
Electronic engineering of gallium nitride(GaN)is critical for enhancement of its electrode performance.In this work,copper(Cu)cation substituted GaN(Cu-GaN)nanowires were fabricated to understand the electronically engineered electrochemical performance for Li ion storage.Cu cation substitution was revealed at atomic level by combination of X-ray photoelectron spectroscopy(XPS),X-ray absorption fine structure(XAFS),density functional theory(DFT)simulation,and so forth.The Cu-GaN electrode deliv-ered high capacity of 813.2 mA h g-1 at 0.1 A g-1 after 200 cycles,increased by 66％relative to the unsub-stituted GaN electrode.After 2000 cycles at 10 A g-1,the reversible capacity was still maintained at 326.7 mA h g-1.The DFT calculations revealed that Cu substitution introduced the impurity electronic states and efficient interatomic electron migration,which can enhance the charge transfer efficiency and reduce the Li ion adsorption energy on the Cu-GaN electrode.The ex-situ SEM,TEM,HRTEM,and SAED analyses demonstrated the reversible intercalation Li ion storage mechanism and good structural stability.The concept of atomic-arrangement-assisted electronic engineering strategy is anticipated to open up opportunities for advanced energy storage applications.
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作者姓名：
Zhenjiang Li;Kesheng Gao;Ying Han;Shiqi Ding;Yanglansen Cui;Minmin Hu;Jian Zhao;Meng Zhang;Alan Meng;Jimmy Yun;Zhiming Liu;Da-Wei Wang;Changlong Sun
作者机构：
College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China;Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials,College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,Shandong,China;Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science,MOE.College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China;School of Materials Science and Engineering,Beihang University,100191 Beijing,China;School of Chemical Engineering,The University of New South Wales,Sydney,NSW 2052,Australia;Qingdao International Academician Park Research Institute,Qingdao 266000,Shandong,China;School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an 710049,Shaanxi,China
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引用格式：
[1]Zhenjiang Li;Kesheng Gao;Ying Han;Shiqi Ding;Yanglansen Cui;Minmin Hu;Jian Zhao;Meng Zhang;Alan Meng;Jimmy Yun;Zhiming Liu;Da-Wei Wang;Changlong Sun-.Atomic insights of electronic states engineering of GaN nanowires by Cu cation substitution for highly efficient lithium ion battery)[J].能源化学,2022(04):46-54
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Atomic,insights,states,engineering,GaN,nanowires,by,substitution,highly,efficient,lithium,battery,Electronic,gallium,nitride,critical,enhancement,its,electrode,performance,In,this,work,copper,substituted,were,fabricated,understand,electronically,engineered,electrochemical,Li,storage,was,revealed,level,combination,ray,photoelectron,spectroscopy,XPS,absorption,fine,structure,XAFS,density,functional,theory,DFT,simulation,forth,deliv,capacity,mA,after,cycles,increased,relative,After,reversible,still,maintained,calculations,that,introduced,impurity,interatomic,migration,which,can,charge,transfer,efficiency,reduce,adsorption,energy,ex,situ,HRTEM,SAED,analyses,demonstrated,intercalation,mechanism,good,structural,stability,concept,arrangement,assisted,strategy,anticipated,open,up,opportunities,advanced,applications
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0.564486
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