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A Long Cycle-Life High-Voltage Spinel Lithium-Ion Battery Electrode Achieved by Site-Selective Doping

  • Gemeng Liang
  • , Zhibin Wu
  • , Christophe Didier
  • , Wenchao Zhang
  • , Jing Cuan
  • , Baohua Li
  • , Kuan Yu Ko
  • , Po Yang Hung
  • , Cheng Zhang Lu
  • , Yuanzhen Chen
  • , Grzegorz Leniec
  • , Sławomir Maksymilian Kaczmarek
  • , Bernt Johannessen
  • , Lars Thomsen
  • , Vanessa K. Peterson
  • , Wei Kong Pang
  • , Zaiping Guo
  • University of Wollongong
  • Australian Nuclear Science and Technology Organisation
  • Tsinghua University
  • Industrial Technology Research Institute of Taiwan
  • West Pomeranian University of Technology

科研成果: 期刊稿件文章同行评审

207 引用 (Scopus)

摘要

Spinel LiNi0.5Mn1.5O4 (LNMO) is a promising cathode candidate for the next-generation high energy-density lithium-ion batteries (LIBs). Unfortunately, the application of LNMO is hindered by its poor cycle stability. Now, site-selectively doped LNMO electrode is prepared with exceptional durability. In this work, Mg is selectively doped onto both tetrahedral (8a) and octahedral (16c) sites in the Fd (Formula presented.) m structure. This site-selective doping not only suppresses unfavorable two-phase reactions and stabilizes the LNMO structure against structural deformation, but also mitigates the dissolution of Mn during cycling. Mg-doped LNMOs exhibit extraordinarily stable electrochemical performance in both half-cells and prototype full-batteries with novel TiNb2O7 counter-electrodes. This work pioneers an atomic-doping engineering strategy for electrode materials that could be extended to other energy materials to create high-performance devices.

源语言英语
页(从-至)10594-10602
页数9
期刊Angewandte Chemie - International Edition
59
26
DOI
出版状态已出版 - 22 6月 2020

联合国可持续发展目标

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  1. 可持续发展目标 7 - 经济适用的清洁能源
    可持续发展目标 7 经济适用的清洁能源

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