首页|Trimetallic Metal-Organic Framework Nanoframe Superstructures:A Stress-Buffering Architecture Engineering of Anode Material toward Boosted Lithium Storage Performance

Trimetallic Metal-Organic Framework Nanoframe Superstructures:A Stress-Buffering Architecture Engineering of Anode Material toward Boosted Lithium Storage Performance

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Metal-organic frameworks(MOFs)can serve as prevailing anodes for lithium-ion batteries,due to their multiple redox-active sites and prominent structural compatibility.However,the poor electronic conductivity and inferior cyclability hinder their further implementation.Herein,a synthetic methodology for trimetallic Fe-Co-Ni MOFs with nanoframe superstructures architecture(Fe-Co-Ni NFSs)via structural evolution is proposed for versatile anode materials for lithium storage.Ascribed to optimal compositional and structural optimization,the Fe-Co-Ni NFSs achieve exceptional electrochemical performance with superior specific capacity(1030 mAh g-1 at 0.1 A g-1),outstanding rate capacity(414 mAh g-1 at 2 A g-1),and prolonged cyclability(489 mAh g-1 upon 1000 cycles at 1 A g-1).Both experimental and theoretical investigations reveal that the multi-component metal centers could boost electronic conductivity,confer multiple active sites,and energetically favor Li adsorption capability.Additionally,the nanoframe superstructures of Fe-Co-Ni NFSs could facilitate stress-buffering effect on volumetric expansion and prevent electrode pulverization,further improving the lithium storage capability.This work envisions a meticulous protocol for high-performance MOF anode materials for lithium-ion batteries.

anodeDFT calculationlithium storagestress-buffering architecturetrimetallic metal-organic framework

Jia Lin、Chao Xu、Man Lu、Xiaoming Lin、Zeeshan Ali、Chenghui Zeng、Xuan Xu、Yifan Luo

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Key Laboratory of Theoretical Chemistry of Environment,Ministry of Education,Guangzhou Key Laboratory of Materials for Energy Conversion and Storage,School of Chemistry,South China Normal University,Guangzhou 510006,China

School of Chemical and Materials Engineering(SCME),National University of Sciences and Technology(NUST),Islamabad 44000,H-12,Pakistan

College of Chemistry and Chemical Engineering,Key Laboratory of Functional Small Organic Molecule,Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry,Jiangxi Normal University,Nanchang 330022,China

he Guangzhou Science and Technology Project

201904010213

2023

10.1002/eem2.12284

能源与环境材料(英文)

能源与环境材料(英文)

CSCD
ISSN：
年,卷(期)：2023.6(1)
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