| LixNi0.8-yCo0.2ZnyOp的合成及电化学性能研究 |
| Synthesis and Electrochemical Performance Study of LixNi0.8-yCo0.2ZnyOp |
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| 摘要: |
| 关键词: 锂离子电池 LixNi0.8-yCo0.2ZnyOp 正极材料 合成 |
| 基金项目: |
| Abstract: A series of single-phase LixNi0.8-yCo0.2ZnyOp(0.96 ≤x≤ 1.10， 0 ≤y≤ 0.05， 2 ≤p≤ 2(1+y) ) (different in the y values) were synthesized by a two-step solid state reaction method， in which LiOH·H2O， Zn-doped spherical Ni(OH)2 and Co2O3 were used as the precursors. The ICP-AES analyses proved that the Zn-doped compounds synthesized had the nonstoichiometric form. The results of the XRD， SEM identified that the uniform particles of the as-prepared materials having a good layered structure were fine， narrowly distributed and well crystallized. The electrochemical performance test was carried out and the results showed that the as-prepared Zn-doped materials had not only a high capacity， but also a better cycling stability characterization than the un-doped one. The Li1.06Ni0.75Co0.22Zn0.03O2.03 material has an initial reversible capacity as high as 160.5mAh·g-1; and a first discharge efficiency 89.2%， and exhibits satisfactory cyclic stability with 90% retainable capacity after 50 cycles. |
| Keywords: lithium ion battery LixNi0.8-yCo0.2ZnyOp cathode material synthesis |
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| 摘要点击次数: 1882 |
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| 袁荣忠,瞿美臻,于作龙.LixNi0.8-yCo0.2ZnyOp的合成及电化学性能研究[J].无机化学学报,2003,19(4):423-427. |
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