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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 UniversityUU0001120  ); Kwon, Ik-Hyun   (Division of Advanced Materials Engineering, The Research Center of Industrial Technology, Engineering Research Institute, Chonbuk National UniversityUU0001120  ); Shon, Mi-Suk   (Division of Advanced Materials Engineering, The Research Center of Industrial Technology, Engineering Research Institute, Chonbuk National UniversityUU0001120  );
  • 초록

    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.


  • 주제어

    ${LiNi_y}{Mn_{2-y}{O_4}$ .   Solid-state reaction .   First discharge capacity .   Cycling performance .   Cyclic voltammograms .   Capacity fading rate.  

  • 참고문헌 (11)

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    6. Capacity Fading of Spinel Phase LiMn₂O₄with Cycling , M.Y.Song;D.S.Ahn;H.R.Park , J. Power Sources / v.83,pp.57-60,
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  • 이 논문을 인용한 문헌 (6)

    1. 2003. "" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 40(7): 620~624     
    2. Kim, Hunuk ; Youn, SunDo ; Lee, Jaecheon ; Park, HyeRyoung ; Song, Myoungyaup 2005. "Study on the Synthesis by Milling and Solid-State Reaction Method and Electrochemical Properties of LiNiO2" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 42(5): 319~325     
    3. Kim, Hunuk ; Youn, SunDo ; Lee, Jaecheon ; Park, HyeRyoung ; Song, Myoungyoup 2005. "Electrochemical Properties of LiNi1-yMyO2(M=Zn2+, Al3+, and Ti4+) Synthesized by Milling and Solid-State Reaction Method" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 42(5): 352~358     
    4. Kim, HunUk ; Youn, SunDo ; Lee, JaeCheon ; Park, HyeRyoung ; Park, Chan-Gi ; Song, MyoungYoup 2005. "Electrochemical Properties of LiNi1-yGayO2 Synthesized by Milling and Solid-State Reaction Method" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 42(9): 631~636     
    5. Kwon, Ikhyun ; Song, Myoungyoup 2005. "Electrochemical Properties of LiNi1-yMyO2(M=Zn2+, Al3+, and Ti4+ Synthesized by Combustion Method" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 42(4): 276~281     
    6. Song, Myoung-Youp 2007. "Synthesis and Electrochemical Properties of $LiNi_{1-y-z}(M_1)_y(M_2)_zO_2$ for the Development of Cathode Materials with Large Capacity" 한국수소 및 신에너지학회 논문집 = Transactions of the Korean Hydrogen and New Energy Society, 18(3): 325~333     

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  • 권익현 (11)

  • Shon, Mi-Suk (1)

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