典型文献
In situ formation of lithiophilic Li22Sn5 alloy and high Li-ion conductive Li2S/Li2Se via metal chalcogenide SnSSe for dendrite-free Li metal anodes
文献摘要：
Lithium metal has gained extensive attention as the most ideal candidate for next-generation battery anode owing to the ultrahigh specific capacity and the lowest electrochemical potential.However,uncon-trollable dendrite growth and huge volume variation extremely restrict the future deployment of lithium metal batteries.Herein,we report metal chalcogenide SnSSe with unique nanoplate stacking structure as a robust substrate for stable Li metal anode.During the initial Li plating process,lithiophilic Li22Sn5 alloy and Li2S/Li2Se sites are obtained via in-situ electrochemical reaction of Li metal and SnSSe.Density func-tional theory(DFT)calculation demonstrates that the formed Li2S/Li2Se achieves low Li diffusion energy barrier,ensuring rapid Li+migration.Li22Sn5 alloy provides strong nucleation sites,promoting uniform Li nucleation.Furthermore,in-situ optical microscopy analysis suggests that the synthesized effect funda-mentally inhibits lithium dendrite growth.Consequently,SnSSe modified Cu foil delivered an ultralow nucleation overpotential,superior cycling stability with 450 cycles(Coulombic efficiency,＞98％),and excellent plating/stripping behavior over 2200 h at 0.5 mA cm-2.Moreover,the brilliant reversible cycles and rate capability were also realized in Li@SnSSe//LiFePO4(LFP)full cell,shedding light on the feasibility of SnSSe for stable and dendrite-free lithium metal anode.
文献关键词：
中图分类号：
作者姓名：
Yaya Wang;Yang Guo;Jiang Zhong;Meng Wang;Lei Wang;Shengyang Li;Song Chen;Hongli Deng;Yong Liu;Yidi Wu;Jian Zhu;Bingan Lu
作者机构：
State Key Laboratory for Chemo/Biosensing and Chemometrics,College of Chemistry and Chemical Engineering,Hunan Key Laboratory of Two-Dimensional Materials,Engineering Research Center of Advanced Catalysis,Ministry of Education,Hunan University,Changsha 410082,Hunan,China;School of Energy Science and Engineering,Central South University,Changsha 410082,Hunan,China;School of Physics and Electronics,Hunan University,Changsha 410082,Hunan,China
文献出处：
引用格式：
[1]Yaya Wang;Yang Guo;Jiang Zhong;Meng Wang;Lei Wang;Shengyang Li;Song Chen;Hongli Deng;Yong Liu;Yidi Wu;Jian Zhu;Bingan Lu-.In situ formation of lithiophilic Li22Sn5 alloy and high Li-ion conductive Li2S/Li2Se via metal chalcogenide SnSSe for dendrite-free Li metal anodes)[J].能源化学,2022(10):339-347
A类：
Li22Sn5,Li2Se,SnSSe,trollable,Li+migration
B类：
In,situ,formation,lithiophilic,alloy,conductive,via,metal,chalcogenide,dendrite,free,anodes,Lithium,has,gained,extensive,attention,most,ideal,candidate,next,generation,battery,owing,ultrahigh,specific,capacity,lowest,electrochemical,However,uncon,growth,huge,volume,variation,extremely,restrict,future,deployment,lithium,batteries,Herein,report,unique,nanoplate,stacking,structure,robust,substrate,stable,During,initial,plating,process,sites,are,obtained,reaction,Density,func,tional,theory,DFT,calculation,demonstrates,that,formed,achieves,diffusion,energy,barrier,ensuring,rapid,provides,strong,nucleation,promoting,uniform,Furthermore,optical,microscopy,analysis,suggests,synthesized,effect,funda,mentally,inhibits,Consequently,modified,foil,delivered,ultralow,overpotential,superior,cycling,stability,cycles,Coulombic,efficiency,excellent,stripping,behavior,mA,Moreover,brilliant,reversible,capability,were,also,realized,LiFePO4,LFP,full,shedding,light,feasibility
AB值：
0.550648
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