Lithium(Li)metal is considered as the candidate for the next generation of Li metal battery(LMB)anodes due to its high capacity and the lowest potential,which is expected to meet the requirements of energy storage dev...Lithium(Li)metal is considered as the candidate for the next generation of Li metal battery(LMB)anodes due to its high capacity and the lowest potential,which is expected to meet the requirements of energy storage devices.Unfortunately,the uncontrollable growth of Li dendrites during the charge/discharge process,as well as the resulting problems of poor cycling stability,low coulomb efficiency and safety risk,has restricted the commercialization of Li anode.Herein,an in-situ interfacial film containing three-dimensional(3D)rod-like micron-structure silver(Ag)is constructed on the surface of the Li metal.Due to the 3D rod-like micron-structure used to homogenize the distribution of current density,achieving uniform nucleation and growth of electrodeposited Li,the produced Li-Ag alloy was employed to restrain the formation of“dead”Li and the in-situ formed LiNO_(3) was utilized to facilitate the stability of solid-electrolyte interface(SEI)film,so the growth of dendritic Li is suppressed via the synergistic effect of structure and surface chemistry regulation.The obtained Li anode can achieve cycling stability at a high current density of 10 mA/cm^(2).This work considers multiaspect factors inducing uniform Li electrodeposition,and provides new insights for the commercialization of LMB.展开更多
基金Projects(51974256,51804259)supported by the National Natural Science Foundation of ChinaProject(2019ZDLGY04-05)supported by the Key R&D Program of Shaanxi,China+6 种基金Projects(2019JLZ-01,2019JLM-29,2020JQ-189)supported by the Natural Science Foundation of Shaanxi,ChinaProject(2019JC-12)supported by the Outstanding Young Scholars of Shaanxi,ChinaProject(2019-TS-06)supported by the Research Fund of the State Key Laboratory of Solidification Processing(NPU),ChinaProjects(19GH020302,3102019JC005)supported by the Fundamental Research Funds for the Central Universities,ChinaProject(2018M641015)supported by the China Postdoctoral Science FoundationProject(BK20180191)supported by the Natural Science Foundation of Jiangsu,ChinaProject(CX202026)supported by the Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University,China。
文摘Lithium(Li)metal is considered as the candidate for the next generation of Li metal battery(LMB)anodes due to its high capacity and the lowest potential,which is expected to meet the requirements of energy storage devices.Unfortunately,the uncontrollable growth of Li dendrites during the charge/discharge process,as well as the resulting problems of poor cycling stability,low coulomb efficiency and safety risk,has restricted the commercialization of Li anode.Herein,an in-situ interfacial film containing three-dimensional(3D)rod-like micron-structure silver(Ag)is constructed on the surface of the Li metal.Due to the 3D rod-like micron-structure used to homogenize the distribution of current density,achieving uniform nucleation and growth of electrodeposited Li,the produced Li-Ag alloy was employed to restrain the formation of“dead”Li and the in-situ formed LiNO_(3) was utilized to facilitate the stability of solid-electrolyte interface(SEI)film,so the growth of dendritic Li is suppressed via the synergistic effect of structure and surface chemistry regulation.The obtained Li anode can achieve cycling stability at a high current density of 10 mA/cm^(2).This work considers multiaspect factors inducing uniform Li electrodeposition,and provides new insights for the commercialization of LMB.
