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Bottom-up lithium growth induced by a vertically graded multifunctional layer design for lithium metal anode
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DOI：10.1016/j.cej.2026.176567.png)
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Abstract
En 中文
• A silver-modulated vertically graded 3D carbon fiber host (VGCF-Ag) with functionally distinct layers was prepared by utilizing a monoaxial-coaxial-monoaxial electrospinning approach. • A simplified synthesis was used for VGCF-Ag fabrication: in-situ Ag NPs synthesis in spinning solution and simplified solution design for different functional layers. • The VGCF-Ag host comprises three functional layers: a bottom induction layer guiding Li+ downward diffusion and preferential nucleation; a middle Li growth layer with fully exposed Ag NPs ensuring uniform Li deposition; a top lithiophobic layer promoting Li+ downward migration while buffering Li growth. • The VGCF-Ag host with functionally distinct layers can effectively regulate Li+ diffusion and deposition behavior, achieving a bottom-up deposition, consequently suppressing the growth of dendrites. • The Li@VGCF-Ag symmetric cell exhibited stable cycling performance of 2000 h at a current density of 1 mA cm−2 with plating capacity of 1 mAh cm−2.
Keywords:
Lithium metal anode
Vertical graded structure
Silver-modulated carbon fiber
Dendrite suppression
Lithium deposition regulation
Journal
IF:
13.2
Papers:
7.2W
Citations:
48.5W