| 尖晶石LiMn_2O_4的多元掺杂改性研究 |
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| 引用本文： | 唐致远,冯季军,徐国祥.尖晶石LiMn_2O_4的多元掺杂改性研究[J].化学学报,2003,61(8):1316-1318. |
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| 作者姓名： | 唐致远 冯季军 徐国祥 |
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| 作者单位： | 天津大学化工学院,天津300072 |
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| 基金项目： | 国家自然科学基金(No.20273047)和教育部博士点基金资助项目(No.20020056045). |
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| 摘 要： | 采用高温固相法合成了多元复合掺杂改性的尖晶石型锰酸锆正极材料，用X射 线衍射法对材料进行了表征，表明所得材料均呈现良好的尖晶石的结构，通过充放 电测试，发现其中LiMn_(1.93)Co_(0.02)Cr_(0.02)Al_(0.02)La_(0.01)O_4和 LiMn_(1.93)Co_(0.02)Cr_(0.02)Al_(0.02)-Zr_(0.01)O_4的循环性能有了很大程 度的改善，循环50次后仍能保持94%和91%的容量。
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| 关 键 词： | 尖晶石型结构 掺杂 锰酸锆 X射线衍射分析 |
| 修稿时间： | 2002年10月7日 |
Study on Multiple Doping of Spinel LiMn_2O_4 |
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| Institution: | School of Chemical Engineering and Technology, Tianjin University |
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| Abstract: | The modified spinel lithium manganate doped with several ions was prepared by solid-state method. The prepared cathode material was characterized by XRD and all the samples have perfect spinel structure. The results of the charge and discharge curves showed that the cycle performance of LiMn 1.93Co 0.02Cr 0.02Al 0.02La 0.01O 4 and LiMn 1.93-Co 0.02Cr 0.02Al 0.02Zr 0.01O 4 have been improved so obviously that 94% and 91% of the initial capacity were preserved respectively after 50 cycles. |
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| Keywords: | cathode material spinel multiple doping cycle performance |
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