Structure, morphology and electrochemical properties of LiNi0.5Mn0.5-xCOxO2 prepared by solid state reaction

被引：59
作者：
Li, DC
Sasaki, Y
Kageyama, M
Kobayakawa, K
Sato, Y
机构：
[1] Kanagawa Univ, Fac Engn, Dept Appl Chem, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan
[2] Kanagawa Univ, High Tech Res Ctr, Yokohama, Kanagawa 2218686, Japan
来源：
JOURNAL OF POWER SOURCES | 2005年 / 148卷 / 148期
关键词：
Li-ion battery; cathode material; LiNi0.5Mn0.5-xCoxO2; unequivalent substitution; electrochemical behavior;
D O I：
10.1016/j.jpowsour.2005.02.006
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A series of LiNi0.5Mn0.5-xCoxO2 (0 <= x <= 0.5) compounds was prepared by a solid state reaction, and their structural, morphological and electrochemical characteristics were also investigated. Co doping suppresses the formation of the impurity phase, NiO, and improves the crystallinity of the compounds. Moreover, the unequilavent substitution of cobalt for manganese would give rise to the increase in the average valence of nickel, thereby shrinkage in the lattice volume and improvement of the electrochemical properties. LiNi0.5Mn0.2Co0.3O2 shows a high reversible capacity as well as an excellent rate capability in 3-4.6 V. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：85 / 89
页数：5
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  • [1] Structural change of Li1-xNi0.5Mn0.5O2 cathode materials for lithium-ion batteries by synchrotron radiation
    Arachi, Y
    Kobayashi, H
    Emura, S
    Nakata, Y
    Tanaka, M
    Asai, T
    [J]. CHEMISTRY LETTERS, 2003, 32 (01) : 60 - 61
  • [2] Influence of carbon coating on the performance of a LiMn0.5Ni0.5O2 cathode
    Cushing, BL
    Goodenough, JB
    [J]. SOLID STATE SCIENCES, 2002, 4 (11-12) : 1487 - 1493
  • [3] Morphology and Safety of Li[NixCo1-2xMnx]O2 (0 ≤ x ≤ 1/2)
    Jouanneau, S
    MacNeil, DD
    Lu, Z
    Beattie, SD
    Murphy, G
    Dahn, JR
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (10) : A1299 - A1304
  • [4] Layered Li(Ni0.5-xMn0.5-xM′2x)O2 (M′ = Co, Al, Ti; x = 0, 0.025) cathode materials for Li-ion rechargeable batteries
    Kang, SH
    Kim, J
    Stoll, ME
    Abraham, D
    Sun, YK
    Amine, K
    [J]. JOURNAL OF POWER SOURCES, 2002, 112 (01) : 41 - 48
  • [5] Electrochemical characteristics of LiNi0.5-xMn0.5-xCo2xO2 (0&lt;x≤0.1) prepared by spray dry method
    Li, DC
    Noguchi, H
    Yoshio, M
    [J]. ELECTROCHIMICA ACTA, 2004, 50 (2-3) : 427 - 430
  • [6] Effect of synthesis method on the electrochemical performance of LiNi1/3Mn1/3Co1/3O2
    Li, DC
    Muta, T
    Zhang, LQ
    Yoshio, M
    Noguchi, H
    [J]. JOURNAL OF POWER SOURCES, 2004, 132 (1-2) : 150 - 155
  • [7] Layered cathode materials Li[NixLi(1/3-2x/3)Mn(2/3-x/3)]O2 for lithium-ion batteries
    Lu, ZH
    MacNeil, DD
    Dahn, JR
    [J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (11) : A191 - A194
  • [8] Synthesis, structure, and electrochemical behavior of Li[NixLi1/3-2x/3Mn2/3-x/3]O2
    Lu, ZH
    Beaulieu, LY
    Donaberger, RA
    Thomas, CL
    Dahn, JR
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (06) : A778 - A791
  • [9] Layered Li[NixCo1-2xMnx]O2 cathode materials for lithium-ion batteries
    Lu, ZH
    MacNeil, DD
    Dahn, JR
    [J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (12) : A200 - A203
  • [10] Structure and electrochemistry of Li[NixCo1-2xMnx]O2 (0≤x≤1/2)
    MacNeil, DD
    Lu, Z
    Dahn, JR
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (10) : A1332 - A1336
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