DOI QR코드

DOI QR Code

Electrochemical Properties of LiNiyMn2-yO4 Prepared by the Solid-state Reaction

  • Song, Myoung-Youp (Division of Advanced Materials Engineering, The Research Center of Industrial Technology, Engineering Research Institute, Chonbuk National University) ;
  • Kwon, Ik-Hyun (Division of Advanced Materials Engineering, The Research Center of Industrial Technology, Engineering Research Institute, Chonbuk National University) ;
  • Shon, Mi-Suk (Division of Advanced Materials Engineering, The Research Center of Industrial Technology, Engineering Research Institute, Chonbuk National University)
  • Published : 2003.05.01

Abstract

LiN $i_{y}$M $n_{2-y}$ $O_4$were synthesized by calcining a mixture of LiOH, Mn $O_2$(CMD), and NiO at 40$0^{\circ}C$ for 10 h and then calcining at 85$0^{\circ}C$ for 48 h in air with intermediate grinding. The voltage vs. discharge capacity curves at a current density 300 $\mu$A/c $m^2$ between 3.5 V and 4.3 V showed two plateaus, but the plateaus became ambiguous as the y value increases. The sample with y=0.02 had the largest first discharge capacity, 118.1 mAh/g. As the value y increases from 0.02 up to 0.2, on the whole, the cycling performance became better. The LiN $i_{0.10}$M $n_{1.90}$ $O_4$sample had a relatively large first discharge capacity 95.0 mAh/g and showed an excellent cycling performance. The samples with larger lattice parameter have, in general, larger discharge capacities. The reduction curves in the cyclic voltammograms for the y=0.05-0.20 samples exhibit three peak showing that the reduction may proceed in three stages in these samples. For the samples with relatively large discharge capacity, the lattice destruction induced by strain causes the capacity fading of LiN $i_{y}$M $n_{2-y}$ $O_4$ with cycling.cling.ing.

References

  1. J. Solid State Chem. v.134 Structure and Electrochemical Properties of Boron-doped LiCoO₂ R.Alcantara;P.Lavela;J.L.Tirado;R.Stoyanova;E.Zhecheva https://doi.org/10.1006/jssc.1997.7552
  2. J. Power Sources v.72 Synthesis by Sol-gel Process and Characterization of LiCoO₂Cathode Materials Z.S.Peng;C.R.Wan;C.Y.Jiang https://doi.org/10.1016/S0378-7753(97)02689-X
  3. J. Electrochem. Soc. v.138 The Spinel Phase of LiMn₂O₄as a Cathode in Secondary Lithium Cells J.M.Tarascon;E.Wang;F.K.Shokoohi;W.R.Mckinnon;S.Colson https://doi.org/10.1149/1.2085330
  4. J. Power Sources v.4863 Synthesis by Sol-gel Method and Electrochemical Properties of LiNiO₂Cathode Materials for Lithium Secondary Battery M.Y.Song;R.Lee
  5. Solid State Ionics v.44 Structure and Electrochemistry of $Li_{1+y}$NiO₂and a New Li₂NiO₂Phase with the Ni(OH)₂Structure J.R.Dahn;U. von Sacken;C.A.Michal https://doi.org/10.1016/0167-2738(90)90049-W
  6. J. Electrochem. Soc. v.138 Rechargeable LiNiO₂/Carbon Cells J.R.Dahn;U. von Sacken;M.W.Juzkow;H. Al-Janaby https://doi.org/10.1149/1.2085950
  7. Solid State Ionics v.112 On the Capacity Deterioration of Spinel Phase LiMn₂O₄ with Cycling around 4 V M.Y.Song;D.S.Ahn https://doi.org/10.1016/S0167-2738(98)00218-5
  8. J. Power Sources v.83 Capacity Fading of Spinel Phase LiMn₂O₄with Cycling M.Y.Song;D.S.Ahn;H.R.Park https://doi.org/10.1016/S0378-7753(99)00256-6
  9. J. Electrochem. Soc. v.143 An Investigation of Lithium Ion Insertion into Spinel Structure Li-Mn-O Compounds Y.Xia;M.Yoshio https://doi.org/10.1149/1.1836544
  10. J. Power Sources v.68 Synthesis and Properties of Gallium-doped LiNiO₂as the Cathode Material for Lithium Secondary Batteries Y.Nishida;K.Nakane;T.Stoh https://doi.org/10.1016/S0378-7753(97)02535-4
  11. J. Kor. Ceram. Soc. v.39 no.6 Variations of the Electrochemical Properties of LiMn₂O₄with the Calcining Temperature M.Y.Song;M.S.Shon https://doi.org/10.4191/KCERS.2002.39.6.523