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

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

机构地区：[1]School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,China [2]State Key Laboratory of Metastable Materials Science and Technology(MMST),Hebei Key Laboratory of Applied Chemistry,Yanshan University,Qinhuangdao 066004,China [3]College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China [4]College of Energy,Soochow University,Suzhou 215006,China [5]School of Low-carbon Energy and Power Engineering,China University of Mining and Technology,Xuzhou 221116,China

出　　处：《Chinese Chemical Letters》2024年第8期520-525,共6页中国化学快报（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.21701083,22279112);Fok Ying-Tong Education Foundation of China(No.171064);Natural Science Foundation of Hebei Province(Nos.B2022203018,B2018203297).

摘　　要：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 ZnMn_(2)O_(4)-MnO nanoparticles were grown on carbon cloth for LMA.It can cycle stably under ultra-high current and areal capacity(10 mA/cm^(2),10 mAh/cm^(2)).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 2h.What is more,it can also be well-coupled with LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(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.

关 键 词：Intermittent lithiophilic model Lithium metal anode(LMA) Three-dimensional(3D)frameworks Lithiophilic Bimetallic metal-organic frameworks(MOFs) 

分 类 号：TM912[电气工程—电力电子与电力传动] O646[理学—物理化学]