3D Grid of Carbon Tubes with Mn3O4-NPs/CNTs Filled in their Inner Cavity as Ultrahigh-Rate and Stable Lithium Anode

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外文摘要：Transition metal oxides are regarded as promising candidates of anode for next-generation lithium-ion batteries(LIBs)due to their ultrahigh theoretical capacity and low cost,but are restricted by their low conductivity and large volume expansion during Li+intercalation.Herein,we designed and constructed a structurally integrated 3D carbon tube(3D-CT)grid film with Mn3O4 nanoparticles(Mn3O4-NPs)and carbon nanotubes(CNTs)filled in the inner cavity of CTs(denoted as Mn3O4-NPs/CNTs@3D-CT)as high-performance free-standing anode for LIBs.The Mn3O4-NPs/CNTs@3D-CT grid with Mn3O4-NPs filled in the inner cavity of 3D-CT not only afford sufficient space to overcome the damage caused by the volume expansion of Mn3O4-NPs during charge and discharge processes,but also achieves highly efficient channels for the fast transport of both electrons and Li+during cycling,thus offering outstanding electrochemical performance(865 mAh g-1 at 1 A g-1 after 300 cycles)and excellent rate capability(418 mAh g-1 at 4 A g-1)based on the total mass of electrode.The unique 3D-CT framework structure would open up a new route to the highly stable,high-capacity,and excellent cycle and high-rate performance free-standing electrodes for high-performance Li-ion storage.

外文关键词：

3D interconnected carbon tube arraysanodefree-standingMn3O4

作者：

Shiping Zhang、Fangming Han、Qijun Pan、Dou Lin、Xiaoguang Zhu、Cheng Shao、Gaixia Zhang、Zhaoming Wang、Shuhui Sun、Guowen Meng

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作者单位：

Key Laboratory of Materials Physics,and Anhui Key Laboratory of Nanomaterials and Nanotechnology,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,P.O.Box 1129,Hefei 230031,China

Department of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,China

Department of Electrical Engineering,École de Technologie Supérieure(ÉTS),Montréal,Québec H3C 1K3,Canada

Institut National de la Recherche Scientifique(INRS),Centre Énergie,Matériaux Télécommunications,Varennes,Québec J3X 1P7,Canada

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基金：

Natural Science Foundation of ChinaNatural Science Foundation of ChinaKey Research Program of Frontier SciencesCAS/SAFEA International Partnership Program for Creative Research TeamsHefei Institutes of Physical Science,Chinese Academy of Sciences Directors Fund

项目编号：

9196320252072372QYZDJ-SSW-SLH046YZJJZX202018

出版年：

2023

DOI：

10.1002/eem2.12586

能源与环境材料(英文)

CSCD

ISSN：

年,卷(期)：2023.6(4)

参考文献量51