采用共沉淀法制备锂离子电池正极材料Li(Ni1/3Co1/3Mn1/3)O2,通过循环伏安法和电化学交流阻抗分析,探讨了锂离子在LiNi1/3Co1/3Mn1/3O2中嵌入和脱出的机制.循环伏安测试结果表明,LiNi1/3 Co1/,Mn1/3O2材料结构中不存在John-teller效应,从而抑制了电极材料和电解液之间的副反应.电化学交流阻抗测试结果表明,随着电压的升高Rct(电荷转移电阻)值逐渐减小,而随着循环次数的增加Rct值逐渐增大.
参考文献
| [1] | D. D. MacNeil;Z. Lu;J. R. Dahn .Structure and Electrochemistry of Li[Ni_xCo_(1-2x)Mn_x]O_2 (0<=x<=1/2)[J].Journal of the Electrochemical Society,2002(10):A1332-A1336. |
| [2] | J. M. Paulsen;C. L. Thomas;J. R. Dahn .O2 structure Li{sub}2/3[Ni{sub}1/3Mn{sub}2/3]O{sub}2: a new layered cathode material for rechargeable lithium batteries[J].Journal of the Electrochemical Society,2000(3):861-868. |
| [3] | Akihisa Kajiyama;Kazunori Takada;Taro Inada .Layered Li-Co-Mn Oxide as a High-Voltage Positive Electrode Material for Lithium Batteries[J].Journal of the Electrochemical Society,2001(9):A981-A983. |
| [4] | K.-K. Lee;K.-B. Kim .Electrochemical and Structural Characterization of LiNi_(1-y)Co_yO_2 (0 <= y <= 0.2) Positive Electrodes during Initial Cycling[J].Journal of the Electrochemical Society,2000(5):1709-1717. |
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