Long-Life Dendrite-Free Lithium Metal Electrode Achieved by Constructing a Single Metal Atom Anchored in a Diffusion Modulator Layer
文献类型： 外文期刊
作者： Wang, Jian 2 ; Zhang, Jing 1 ; Cheng, Shuang 2 ; Yang, Jin 2 ; Xi, Yonglan 4 ; Hou, Xingang 2 ; Xiao, Qingbo 2 ; Lin, Hon 1 ;
作者机构： 1.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
2.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, I Lab, Suzhou 215123, Peoples R China
3.Helmholtz Inst Ulm HIU, D-89081 Ulm, Germany
4.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China
关键词： lithium metal battery; single atom catalyst; defect-containing nanoparticle; dendrite-free lithium anode; in situ synthesis
期刊名称：NANO LETTERS （ 影响因子：11.238； 五年影响因子：12.727 ）
ISSN： 1530-6984
年卷期： 2021 年 21 卷 7 期
页码：
收录情况： SCI
摘要： Lithium metal electrodes have shown great promise for high capacity and the lowest potential. However, wide application is restricted by uncontrollable plating/stripping lithium behaviors, an uneven solid electrolyte interphase, and a lithium dendrite. Herein, the highly active single metal atom anchored in vacant catalyst is synthesized on the hierarchical porous nanocarbon (SACo/ADFS@HPSC). Acting as an artificial protective modulation layer on the lithium surface, the numerous atomic sites show the superiority in modulating lithium ion behaviors and smoothing the lithium surface without dendrite growth. As a consequence, the SACo/ADFS@HPSC- modified Li electrode lowers nucleation barrier (15 mV), extends the smooth plating lifespan (1600 h), and improves Coulombic efficiency, significantly accelerating the horizonal deposition of plated lithium. Coupled with a sulfur cathode, the fabricated pouch cell with 5.4 mg cm(-2) delivers a high capacity of 3.78 mA h cm(-2) corresponding to 1505 Wh kg(-1), showing the promising practical application.
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