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Thermodynamic Regulation of Dendrite-Free Li Plating on Li3Bi for Stable Lithium Metal Batteries.
Xu, Ying; Zheng, Huanqin; Yang, He; Yu, Yanan; Luo, Jianmin; Li, Tao; Li, Weiyang; Zhang, Yan-Ning; Kang, Yijin.
Afiliação
  • Xu Y; School of Materials and Energy, Lanzhou University, Lanzhou 730000, People's Republic of China.
  • Zheng H; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China.
  • Yang H; Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03786, United States.
  • Yu Y; School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China.
  • Luo J; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China.
  • Li T; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China.
  • Li W; Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03786, United States.
  • Zhang YN; School of Materials and Energy, Lanzhou University, Lanzhou 730000, People's Republic of China.
  • Kang Y; Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03786, United States.
Nano Lett ; 21(20): 8664-8670, 2021 Oct 27.
Article em En | MEDLINE | ID: mdl-34618467
Rechargeable batteries with metallic lithium (Li) anodes are attracting ever-increasing interests because of their high theoretical specific capacity and energy density. However, the dendrite growth of the Li anode during cycling leads to poor stability and severe safety issues. Here, Li3Bi alloy coated carbon cloth is rationally chosen as the substrate of the Li anode to suppress the dendrite growth from a thermodynamic aspect. The adsorption energy of a Li atom on Li3Bi is larger than the cohesive energy of bulk Li, enabling uniform Li nucleation and deposition, while the high diffusion barrier of the Li atom on Li3Bi blocks the migration of adatoms from adsorption sites to the regions of fast growth, which further ensures uniform Li deposition. With the dendrite-free Li deposition, the composite Li/Li3Bi anode enables over 250 cycles at an ultrahigh current density of 20 mA cm-2 in a symmetrical cell and delivers superior electrochemical performance in full batteries.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nano Lett Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nano Lett Ano de publicação: 2021 Tipo de documento: Article