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  • Lithiophilic interface dyna...
    Jiang, Tingting; Sun, Lingling; Zhang, Yao; Zhang, Xiaomin; Lin, Huijuan; Rui, Kun; Zhu, Jixin

    Chemical engineering journal (Lausanne, Switzerland : 1996), 05/2023, Letnik: 464
    Journal Article

    Display omitted •NiFe-LDH nanosheets have been successfully fabricated onto acidified carbon cloth by hydrothermal process to form hierarchical structures.•3D carbon cloth with vertically arranged nanosheets guide uniform Li+ flux distribution, thereby inducing homogeneous Li nucleation.•Sufficient space provided by well-designed nano/microstructured carbon cloth can accommodate Li deposition, effectively alleviating the volumetric Li expansion.•Li-plated NiFe-LDH@ACC exhibits dendrite-free Li plating/stripping morphology and boosted electrochemical performance. Lithium (Li) metal is deemed as attractive anode due to its low electrochemical potential and high theoretical capacity. Nevertheless, the uncontrollable Li dendrite growth causes safety concern and battery failure, which severely impedes the commercialization of Li metal batteries (LMBs). Herein, 3D functional matrix comprising NiFe-layered-double-hydroxide nanosheet arrays (NiFe-LDH) evenly dispersed on acidified carbon cloth (NiFe-LDH@ACC) via hydrothermal method is designed to manipulate uniform Li electrodeposition morphology. Vertical NiFe-LDH nanosheets possess high accessible surface area to supply vast Li nucleation sites, thus effectively reducing the local current density and decreasing the nucleation energy barrier to suppress Li dendrites growth, which has been validated by simulation. Moreover, 3D structure of carbon cloth provides adequate space for storing Li metal, substantially abating volume fluctuation during repeated Li plating/stripping process. Consequently, the Li@NiFe-LDH@ACC electrode manifests ultra-long lifespan over 3500 h and low-voltage hysteresis in symmetric cells. Additionally, the full cell with limited Li@NiFe-LDH@ACC anode and commercial LiFePO4 cathode (mass loading: 8.35 mg cm−2) displays good rate capacity from 0.2 C to 5 C, and can steadily operate for 75 cycles at 2 C with a capacity of 131 mAh g−1, revealing the practical feasibility of the surface modification strategy for constructing advanced Li metal anode with high safety and appealing durability.