EPJ Web of Conferences (Jan 2017)

Structure and electrochemical properties of Zn and Co dual-doped (Li2Co1-xZnxMn3O8) as cathode material for rechargeable lithium-ion batteries

  • Tan Tze Qing,
  • Osman Rozana Aina Maulat,
  • Reddy M. V.,
  • Khor Shing Fhan,
  • Idris Mohd Sobri

DOI
https://doi.org/10.1051/epjconf/201716201053
Journal volume & issue
Vol. 162
p. 01053

Abstract

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Spinel Zn doped Li2CoMn3O8 (or also known as LiCo0.5Mn1.5O4) yielding formula Li2Co1-xZnxMn3O8 (0 ≤ x ≤ 1) were produced via conventional solid state method. XRD results and the variation of cell lattice and volume showed that the solid solution limit of these compositions was at x=0.6. Impurities were detected when the amount of Zn was beyond 60 %. The discharge capacities deteriorate as Zn content was increased. However, these Zn doped samples exhibited excellent cycle-ability (99.9% capacity retention) throughout 50 charging and discharging cycles which indicated that doping of Zn could possibly stabilised the spinel structure.