3D Free-Standing Carbon Nanofibers Modified by Lithiophilic Metals Enabling Dendrite-Free Anodes for Li Metal Batteries

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外文摘要：Li metal with high-energy density is considered as the most promising anode for the next-generation rechargeable Li metal batteries;however,the growth of Li dendrites seriously hinders its practical application.Herein,3D free-standing carbon nanofibers modified by lithiophilic metal particles(CNF/Me,Me=Sn,Fe,Co)are obtained in situ by the electrospinning method.Benefiting from the lithophilicity,the CNF/Me composite may effectively prevent the formation of Li dendrites in the Li metal batteries.The optimized CNF/Sn-Li composite electrode exhibits a stable cycle life of over 2350 h during Li plating/stripping.When matched with typical commercial LiFePO4(LFP)cathode,the LFP//CNF/Sn-Li full cell presents a high initial discharge specific capacity of 139 mAh g-1 at 1 C,which remains at 146 mAh g-1 after 400 cycles.When another state-of-the-art commercial LiNi0.8Co0.1Mn0.1O2(NCM(811))cathode is used,the assembled NCM//CNF/Sn-Li full cell shows a large initial specific discharge capacity of 206 mAh g-1 at substantially enhanced 10 C,which keeps at the good capacity of 99 mAh g-1 after 300 cycles.These results are greatly superior to the counterparts with Li as the anodes,indicating the great potential for practical utilization of the advanced CNF/Sn-Li electrode.

外文关键词：

3D free-standing carbon nanofibersdendrite-free anodeselectrospinning methodlithiophilic metallithium metal batteries

作者：

Huifeng Zhuang、Tengfei Zhang、Hong Xiao、Xiao Liang、Fanchao Zhang、Jianlin Deng、Qiuming Gao

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作者单位：

Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education,Beijing Advanced Innovation Center for Biomedical Engineering,School of Chemistry,Beihang University,Beijing 100191,China

National Supercomputer Research Center of Advanced Materials,Advanced Materials Institute,Qilu University of Technology,Shandong Academy of Sciences,Jinan 250014,China

基金：

国家自然科学基金国家自然科学基金国家自然科学基金National Basic Research Programs of China(973 Program)National Basic Research Programs of China(973 Program)Chinese Aeronautic Project高等学校学科创新引智计划(111计划)

项目编号：

2207500821571010U07340022014CB9318002011CB9357002013ZF51069B14009

出版年：

2023

DOI：

10.1002/eem2.12470

能源与环境材料(英文)

CSCD

ISSN：

年,卷(期)：2023.6(3)

参考文献量57