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Enhanced Lithium Storage Performance of Al-Doped V2O5 Nanowire Cathode Materials

Wenhan Xua,b, Ting Zhoua, Jingcheng Jia, Yanwei Li*,a,b, Shangwang Le*,b   

  1. aGuangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi 541004, China;
    bKey Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, College of Material Science and Engineering, Guilin University of Technology, Guilin, Guangxi 541004, China
  • Received:2023-05-30 Revised:2023-07-04 Accepted:2023-07-05
  • Contact: Email: lywhit@126.com (Y. L.), leshangwang@glut.edu.cn (S. L.)

Abstract: One-dimensional (1D) Al-doped V2O5 nanowires were synthesized by a hydrothermal method and subsequent heat treatment process. The microstructure, surface morphology, and electrochemical performance of the as-prepared 1D Al-doped V2O5 nanowires were analyzed by XRD, XPS, SEM, CV, EIS, and galvanostatic discharge/charge tests. The results show that Al3+ doping can effectively increase the V4+ concentration in V2O5 material and prevent the agglomeration of V2O5 nanowires. When used as a cathode material for lithium-ion batteries (LIBs), the Al-doped V2O5 sample exhibits much-enhanced cycling performance, improved high-rate capability, higher electrochemical reaction reversibility, and lower electrochemical reaction resistance than the pure V2O5 sample (without Al3+ doping).

Key words: lithium-ion batteries, cathode materials, V2O5, Al3+-doping, electrochemical performance

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