| Li4Ti5O12／C复合负极材料的一步固相合成及不同碳源的影响 |
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| 引用本文： | 叶静雅 赵新兵 余鸿明 朱铁军. Li4Ti5O12／C复合负极材料的一步固相合成及不同碳源的影响[J]. 功能材料, 2007, 38(A04): 1423-1427 |
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| 作者姓名： | 叶静雅 赵新兵 余鸿明 朱铁军 |
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| 作者单位： | 浙江大学材料科学与工程系,浙江杭州310027 |
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| 摘 要： | 采用固相合成的方法，以Li2CO3，TiO2为原料，分别以葡萄糖、柠檬酸、聚丙烯及三者的混合物作为碳源一步烧结合成了亚微米级的Li4Ti5O12／c复合负极材料,XRD结果显示其具有理想的尖晶石结构。研究结果表明，以葡萄糖作为碳源制备的Li4Ti5O12／c材料的性能最佳，其碳含量最高，为2．07％，0.5c和1c倍率下的放电容量分别达到了220和191mAh／g。
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| 关 键 词： | Li4Ti5O12 C 负极材料 锂离子电池 固相合成 |
| 文章编号： | 1001-9731（2007）增刊-1423-05 |
| 修稿时间： | 2007-04-29 |
Influence of various carbon precursors on electrochemical property of Li4TisO12/C prepared by one-step solid-state synthesis |
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| YE Jing-ya, ZHAO Xin-bing, YU Hong-ming, ZHU Tie-jun. Influence of various carbon precursors on electrochemical property of Li4TisO12/C prepared by one-step solid-state synthesis[J]. Journal of Functional Materials, 2007, 38(A04): 1423-1427 |
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| Authors: | YE Jing-ya ZHAO Xin-bing YU Hong-ming ZHU Tie-jun |
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| Affiliation: | Department of Materials, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Sub-micron sized Li4Ti5O12/C composite for lithium batteries has been synthesized by an one-step solid-state method using TiO2-anatase, Li2CO3 and glucose, citric acid, polypropylene, and triple mixture as carbon precursors. X-ray diffraction shows that the as-prepared samples have a fine characteristic phase of spinel Li4Ti5O12. It was found that the Li4Ti5O12/C composite prepared using glucose as the carbon precursor possesses the highest carbon coating amount of about 2% and the best electrochemical performance, a discharge capacity of 220 or 191 mAh/g at the rates of 0.5C or 1C respectively. |
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| Keywords: | Li4Ti5O12/C anode material lithium-ion batteries solid-state synthesis |
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