首页|An intermittent lithium deposition model based on CuMn-bimetallic MOF derivatives for composite lithium anode with ultrahigh areal capacity and current densities

An intermittent lithium deposition model based on CuMn-bimetallic MOF derivatives for composite lithium anode with ultrahigh areal capacity and current densities

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Recently,three-dimensional(3D)conductive frameworks have been chosen as the host for composite lithium(Li)metal anode because of their exceptional electrical conductivity and remarkable thermal and electrochemical stability.However,Li tends to accumulate on the top of the 3D frameworks with homogenous lithiophilicity and Li dendrite still growth.This work firstly designed a bimetallic metal-organic framework(MOF)(CuMn-MOF)derived Cu2O and Mn3O4 nanoparticles decorated carbon cloth(CC)substrates(CC@Cu2O/Mn3O4)to fabricate a composite Li anode.Thanks to the synergistic effects of lithiophilic Cu2O and Mn3O4,the CC@Cu2O/Mn3O4@Li symmetrical cell can afford a prolonged cycling lifespan(1400 h)under an ultrahigh current density and areal capacity(6 mA·cm-2/6 mAh·cm-2).When coupled with the LiFePO4(LFP)cathode,the LFP‖CC@Cu2O/Mn3O4@Li full cell demonstrated a superior performance of 89.7 mAh·g-1 even at an extremely high current density(10 C).Furthermore,it can also be matched well with LiNi0.5Co0.2Mn0.3O2(NCM523)cathode.Importantly,to explain the excellent performances of the CC@Cu2O/Mn3O4@Li composite anode,an intermittent model was also proposed.This study offers a novel model that can enhance our comprehension of the Li deposition behavior and pave the way to attain stable and safe Li metal anodes by employing bimetallic MOF-derived materials to construct 3D frameworks.

lithium metal anode(LMA)three-dimensional(3D)frameworksintermittent lithiophilic modelhigh areal capacitybimetallic metal-organic frameworks(MOFs)

Tao Wei、Yanyan Zhou、Cheng Sun、Xingtong Guo、Shoudong Xu、Daifen Chen、Yongfu Tang

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School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang212003,China

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

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

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFok Ying-Tong Education Foundation of ChinaNatural Science Foundation of Hebei ProvinceNatural Science Foundation of Hebei Province

2170108322279112171064B2022203018B2018203297

2024

10.1007/s12274-023-6187-8

纳米研究(英文版)

纳米研究(英文版)

CSTPCD
ISSN：
年,卷(期)：2024.17(4)
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