Lithium metal anode has been demonstrated as the most promising anode for lithium batteries because of its high theoretical capacity,but infinite volume change and dendritic growth during Li electrodeposition have prevented its practical applications.Both physi-cal morphology confinement and chemical adsorption/diffusion regula-tion are two crucial approaches to designing lithiophilic materials to alleviate dendrite of Li metal anode.However,their roles in suppress-ing dendrite growth for long-life Li anode are not fully understood yet.Herein,three different Ni-based nanosheet arrays(NiO-NS,Ni3N-NS,and Ni5P4-NS)on carbon cloth as proof-of-concept lithiophilic frame-works are proposed for Li metal anodes.The two-dimensional nanoar-ray is more promising to facilitate uniform Li+flow and electric field.Compared with the NiO-NS and the Ni5P4-NS,the Ni3N-NS on carbon cloth after reacting with molten Li(Li-Ni/Li3N-NS@CC)can afford the strongest adsorption to Li+and the most rapid Li+diffusion path.Therefore,the Li-Ni/Li3N-NS@CC electrode realizes the lowest overpotential and the most excellent electrochemical performance(60 mA cm-2 and 60 mAh cm-2 for 1000 h).Furthermore,a remarkable full battery(LiFePO4||Li-Ni/Li3N-NS@CC)reaches 300 cycles at 2C.This research provides valuable insight into designing dendrite-free alkali metal batteries.

Shufen Ye;Xingjia Chen;Rui Zhang;Yu Jiang;Fanyang Huang;Huijuan Huang;Yu Yao;Shuhong Jiao;Xiang Chen;Qiang Zhang;Yan Yu

Hefei National Center for Physical Sciences at the Microscale,Department of Materials Science and Engineering,iChEM(Collaborative Innovation Center of Chemistry for Energy Materials),CAS Key Laboratory of Materials for Energy Conversion,University of Science and Technology of China,Hefei 230026,Anhui,People's Republic of China;Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing 100081,People's Republic of China;School of Materials Science and Engineering,Anhui University,Hefei 230601,Anhui,People's Republic of China;Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology,Department of Chemical Engineering,Tsinghua University,Beijing 100084,People's Republic of China;National Synchrotron Radiation Laboratory,Hefei 230026,Anhui,People's Republic of China

纳微快报（英文）

[1]Shufen Ye;Xingjia Chen;Rui Zhang;Yu Jiang;Fanyang Huang;Huijuan Huang;Yu Yao;Shuhong Jiao;Xiang Chen;Qiang Zhang;Yan Yu-.Revisiting the Role of Physical Confinement and Chemical Regulation of 3D Hosts for Dendrite-Free Li Metal Anode)[J].纳微快报（英文）,2022(11):290-306

Confinement,Ni5P4,nanoar,Li+flow

Revisiting,Role,Physical,Chemical,Regulation,Hosts,Dendrite,Free,Metal,Anode,Lithium,metal,has,been,demonstrated,most,promising,lithium,batteries,because,its,high,theoretical,capacity,but,infinite,volume,change,dendritic,growth,during,electrodeposition,have,prevented,practical,applications,Both,physi,morphology,confinement,adsorption,regula,two,crucial,approaches,designing,lithiophilic,materials,alleviate,dendrite,However,their,roles,suppress,long,life,not,fully,understood,yet,Herein,three,different,nanosheet,arrays,NiO,NS,Ni3N,carbon,cloth,proof,concept,frame,works,proposed,anodes,dimensional,facilitate,uniform,electric,field,Compared,after,reacting,molten,Li3N,CC,can,afford,strongest,Li+and,rapid,Li+diffusion,path,Therefore,realizes,lowest,overpotential,excellent,electrochemical,performance,mAh,Furthermore,remarkable,battery,LiFePO4,reaches,cycles,2C,This,research,provides,valuable,insight,into,free,alkali

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