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      Self‐Assembled 2D VS 2/Ti 3C 2T x MXene Nanostructures with Ultrafast Kinetics for Superior Electrochemical Sodium‐Ion Storage

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          Abstract

          Constructing nanostructures with high structural stability and ultrafast electrochemical reaction kinetics as anodes for sodium‐ion batteries (SIBs) is a big challenge. Herein, the robust 2D VS 2/ Ti 3C 2T x MXene nanostructures with the strong Ti─S covalent bond synthesized by a one‐pot self‐assembly approach are developed. The strong interfacial interaction renders the material of good structural durability and enhanced reaction kinetics. Meanwhile, the enlarged and few‐layered MXene nanosheets can be easily obtained according to this interaction, providing a conductive network for sufficient electrolyte penetration and rapid charge transfer. As predicted, the VS 2/MXene nanostructures exhibit an extremely low sodium diffusion barrier confirmed by DFT calculations and small charge transfer impedance evidenced by electrochemical impedance spectroscopy (EIS) analysis. Therefore, the SIBs based on the VS 2/MXene electrode present first‐class electrochemical performance with the ultrahigh average initial columbic efficiency of 95.08% and excellent sodium‐ion storage capacity of 424.6 mAh g −1 even at 10 A g −1. It also shows an outstanding sodium‐ion storage capacity of 514.2 mAh g −1 at 1 A g −1 with a capacity retention of nearly 100% within 500 times high‐rate cycling. Such impressive performance demonstrates the successful synthesis strategy and the great potential of interfacial interactions for high‐performance energy storage devices.

          Abstract

          In this study, the robust 2D VS 2/ Ti 3C 2T x MXene nanostructures with the strong Ti─S covalent bond synthesized by a one‐pot self‐assembly approach are developed. The strong interfacial interaction renders the material of good structural durability and enhanced reaction kinetics, leading to the first‐class electrochemical performance of sodium‐ion batteries based on the VS 2/MXene electrode.

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          Author and article information

          Contributors
          mapin@nxu.edu.cn
          lihaibo@nxu.edu.cn
          yanghuiying@sutd.edu.sg
          yumeng.shi@szu.edu.cn
          Journal
          Adv Sci (Weinh)
          Adv Sci (Weinh)
          10.1002/(ISSN)2198-3844
          ADVS
          Advanced Science
          John Wiley and Sons Inc. (Hoboken )
          2198-3844
          27 August 2023
          November 2023
          : 10
          : 31 ( doiID: 10.1002/advs.v10.31 )
          : 2304465
          Affiliations
          [ 1 ] Ningxia Key Laboratory of Photovoltaic Materials School of Materials and New Energy Ningxia University Yinchuan 750021 China
          [ 2 ] Pillar of Engineering Product Development Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
          [ 3 ] International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education College of Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
          Author notes
          Author information
          https://orcid.org/0000-0002-2244-8231
          Article
          ADVS6348
          10.1002/advs.202304465
          10625112
          37635186
          7c0bb002-0880-47cb-a5ae-8c11e2d3b293
          © 2023 The Authors. Advanced Science published by Wiley‐VCH GmbH

          This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

          History
          : 03 August 2023
          : 03 July 2023
          Page count
          Figures: 7, Tables: 0, Pages: 10, Words: 6044
          Funding
          Funded by: Science and Technology Project of Shenzhen
          Award ID: JCYJ20220531100815034
          Funded by: MOE SUTD Kickstarter initiative
          Award ID: SKI 2021_02_16
          Funded by: Technology and Innovation Commission of Shenzhen
          Award ID: 20200810164814001
          Funded by: Natural Science Foundation of Guangdong Province , doi 10.13039/501100003453;
          Award ID: 2022A1515012055
          Categories
          Research Article
          Research Articles
          Custom metadata
          2.0
          November 3, 2023
          Converter:WILEY_ML3GV2_TO_JATSPMC version:6.3.4 mode:remove_FC converted:04.11.2023

          mxene nanostructures,self‐assemble,sodium‐ion storage

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