Lithium Atom Surface Diffusion and Delocalized Deposition Propelled by Atomic Metal Catalyst toward Ultrahigh-Capacity Dendrite-Free Lithium Anode
文献类型： 外文期刊
作者： Wang, Jian 1 ; Zhang, Jing 4 ; Duan, Shaorong 1 ; Jia, Lujie 1 ; Xiao, Qingbo 5 ; Liu, Haitao 6 ; Hu, Huimin 1 ; Cheng, Shuang 1 ; Zhang, Zhiyang 5 ; Li, Linge 1 ; Duan, Wenhui 7 ; Zhang, Yuegang 7 ; Lin, Hongzhen 1 ;
作者机构： 1.Chinese Acad Sci, i Lab, Suzhou 215123, Peoples R China
2.Chinese Acad Sci, CAS Key Lab Nanophoton Mat & Devices, Suzhou Inst Nano Tech & Nano Bion, Suzhou 215123, Peoples R China
3.HelmholtzInstituteUlm HIU, D-89081 Ulm, Germany
4.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
5.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China
6.Inst Appl Phys & Computat Mathemat, Lab Computat Phys, Beijing 100088, Peoples R China
7.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
关键词： lithium metal battery; single atomic catalyst; surface atom diffusion; dendrite-free lithium plating; surface activator
期刊名称：NANO LETTERS （ 影响因子：12.262； 五年影响因子：12.709 ）
ISSN： 1530-6984
年卷期：
页码：
收录情况： SCI
摘要： Lithium metal anode possesses overwhelming capacity and low potential but suffers from dendrite growth and pulverization, causing short lifespan and low utilization. Here, a fundamental novel insight of using single-atomic catalyst (SAC) activators to boost lithium atom diffusion is proposed to realize delocalized deposition. By combining electronic microscopies, time-of -flight secondary ion mass spectrometry, theoretical simulations, and electro-chemical analyses, we have unambiguously depicted that the SACs serve as kinetic activators in propelling the surface spreading and lateral redistribution of the lithium atoms for achieving dendrite-free plating morphology. Under the impressive capacity of 20 mA h cm-2, the Li modified with SAC-activator exhibits a low overpotential of & SIM;50 mV at 5 mA cm-2, a long lifespan of 900 h, and high Coulombic efficiencies during 150 cycles, much better than most literature reports. The so-coupled lithium-sulfur full battery delivers high cycling and rate performances, showing great promise toward the next-generation lithium metal batteries.
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