典型文献
Direct synthesis of tin spheres/nitrogen-doped porous carbon composite by self-formed template method for enhanced lithium storage
文献摘要：
To inhibit the agglomeration of tin-based nanomaterials and simplify the complicated synthesis process,a facile and eco-friendly self-formed template method is reported to synthesize tin submicron spheres dispersed in nitrogen-doped porous carbon(Sn/NPC)by pyrolysis of a mixture of disodium stannous cit-rate and urea.The vital point of this strategy is the formation of Na2CO3 templates during pyrolysis.This self-formed Na2CO3 acts as porous templates to support the formation of NPC.The obtained NPC provides good electronic conductivity,ample defects,and more active sites.Serving as anode for Li-ion batteries,the Sn/NPC electrode obtains a stable discharge capacity of 674.1 mAh/g after 150 cycles at 0.1 A/g.Especially,a high discharge capacity of 331.2 mAh/g can be achieved after 1100 cycles at 3 A/g.Ad-ditionally,a full cell coupled with LiCoO2 as cathode yields a discharge capacity of 524.8 mAh/g after 150 cycles at 0.1 A/g.In-situ XRD is implemented to investigate the alloying/dealloying reaction mechanisms.Density functional theory calculation ulteriorly explicates that NPC heightens intrinsic electronic conduc-tivity,and NPC especially pyrrolic-N and pyridinic-N doping facilitates the Li-adsorption ability.Climbing image nudged elastic band method reveals low Li+diffusion energy barrier in presence of N atoms,which accounts for the terrific electrochemical properties of Sn/NPC electrode.
文献关键词：
中图分类号：
作者姓名：
Kun Liu;Jia-ao Wang;Hongfei Zheng;Xiaodong Sun;Zhimo Yang;Jianzong Man;Xinyu Wang;Juncai Sun
作者机构：
Institute of Materials and Technology,Dalian Maritime University,Dalian 116026,China;Department of Chemistry and the Oden Institute for Computational Engineering and Sciences,The University of Texas at Austin,Austin,TX,78712-0165,USA;College of Materials,Xiamen University,Xiamen 361005,China
文献出处：
引用格式：
[1]Kun Liu;Jia-ao Wang;Hongfei Zheng;Xiaodong Sun;Zhimo Yang;Jianzong Man;Xinyu Wang;Juncai Sun-.Direct synthesis of tin spheres/nitrogen-doped porous carbon composite by self-formed template method for enhanced lithium storage)[J].材料科学技术（英文版）,2022(09):88-97
A类：
stannous,ulteriorly,heightens,terrific
B类：
Direct,synthesis,tin,spheres,nitrogen,doped,porous,carbon,composite,by,self,formed,method,enhanced,lithium,storage,To,inhibit,agglomeration,nanomaterials,simplify,complicated,process,facile,eco,friendly,reported,synthesize,submicron,dispersed,Sn,NPC,pyrolysis,mixture,disodium,urea,vital,point,this,strategy,formation,Na2CO3,templates,during,This,acts,support,obtained,provides,good,electronic,conductivity,ample,defects,more,active,sites,Serving,anode,batteries,electrode,obtains,stable,discharge,capacity,mAh,after,cycles,Especially,high,can,be,achieved,Ad,ditionally,full,cell,coupled,LiCoO2,cathode,yields,In,situ,implemented,investigate,dealloying,reaction,mechanisms,Density,functional,theory,calculation,explicates,that,intrinsic,especially,pyrrolic,pyridinic,doping,facilitates,adsorption,ability,Climbing,image,nudged,elastic,band,reveals,low,Li+diffusion,energy,barrier,presence,atoms,which,accounts,electrochemical,properties
AB值：
0.602835
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