首页|An intermittent lithium deposition model based on bimetallic MOFs derivatives for dendrite-free lithium anode with ultrahigh areal capacity

An intermittent lithium deposition model based on bimetallic MOFs derivatives for dendrite-free lithium anode with ultrahigh areal capacity

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In the development of 3D conductive frameworks for lithium metal anode(LMA),two models have been proposed:top growth model and bottom-up growth model.However,Li tends to accumulate on the top of these 3D frameworks with homogenous lithiophilicity(top growth)and Li dendrite still forms.To address this issue,some researchers have focused on developing 3D frameworks with gradient lithio-philicity,which realized bottom-up growth of Li.Nevertheless,partial Li nucleation sites on the top of these frameworks were missed.Inspired by the two models talked above,this work firstly proposed a novel intermittent lithiophilic model for lithium deposition.To demonstrate the feasibility of this model,a bimetallic metal-organic frameworks derived ZnMn2O4-MnO nanoparticles were grown on carbon cloth for LMA.It can cycle stably under ultra-high current and areal capacity(10mA/cm2,10 mAh/cm2).The in-situ optical microscopy(OM)was conducted to observe the Li deposition behavior,no dendrite was found during 80 h in ester-based electrolyte while the pure Li only cycled for 2 h.What is more,it can also be well-coupled with LiNi0.8Co0.1Mn0.1O2(NCM811)cathode and solid-state electrolyte,which further prove the advantages of the intermittent model for the development of LMAs with high safety and high energy density.

Intermittent lithiophilic modelLithium metal anode(LMA)Three-dimensional(3D)frameworksLithiophilicBimetallic metal-organic frameworks(MOFs)

Tao Wei、Jiahao Lu、Pan Zhang、Qi Zhang、Guang Yang、Ruizhi Yang、Daifen Chen、Qian Wang、Yongfu Tang

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School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China

School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,China

College of Energy,Soochow University,Suzhou 215006,China

State Key Laboratory of Metastable Materials Science and Technology(MMST),Hebei Key Laboratory of Applied Chemistry,Yanshan University,Qinhuangdao 066004,China

School of Low-carbon Energy and Power Engineering,China University of Mining and Technology,Xuzhou 221116,China

College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China

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2024

10.1016/j.cclet.2023.109122

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(8)