| 亚微米Li_4Ti_5O_(12)材料的电化学性能研究 |
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| 引用本文： | 杜晨树,杨化滨,周作祥,吴孟涛,黄来和,徐宁. 亚微米Li_4Ti_5O_(12)材料的电化学性能研究[J]. 电化学, 2008, 14(3): 238. DOI: 10.61558/2993-074X.1898 |
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| 作者姓名： | 杜晨树 杨化滨 周作祥 吴孟涛 黄来和 徐宁 |
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| 作者单位： | 南开大学新能源材料化学研究所;天津巴莫科技股份有限公司; |
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| 摘 要： | 应用改进固相合成法制备亚微米Li4Ti5O12锂离子电池材料.X射线衍射(XRD)、扫描电镜(SEM)和激光粒度分析分别显示:物相单一且粒度均匀,D50为0.886μm,属于亚微米级材料.合适的粒度和分布使得该材料展示出优良的电化学性能,以其装配的半电池中,0.1C首次放电容量为165 mAh/g,5C时放电容量可达107 mAh/g,10C时仍可达到54 mAh/g.
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| 关 键 词： | 钛酸锂 固相合成 亚微米 倍率性能 |
| 收稿时间： | 2008-08-28 |
Electrochemical Properties of Sub-micron Li_4Ti_5O_(12) Powders |
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| DU Chen-shu,YANG Hua-bin,ZHOU Zuo-xiang,WU Meng-tao,HUANG Lai-he,XU Ning. Electrochemical Properties of Sub-micron Li_4Ti_5O_(12) Powders[J]. Electrochemistry, 2008, 14(3): 238. DOI: 10.61558/2993-074X.1898 |
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| Authors: | DU Chen-shu YANG Hua-bin ZHOU Zuo-xiang WU Meng-tao HUANG Lai-he XU Ning |
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| Affiliation: | DU Chen-shu1,YANG Hua-bin1,ZHOU Zuo-xiang1,WU Meng-tao2,HUANG Lai-he2,XU Ning2(1.Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China,2.Tianjin B&M Science Technology Joint-Stock Co LTD,Tianjin 300384,China) |
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| Abstract: | The sub-micronmeteric Li4Ti5O12 powder material was successfully prepared through an improved solid-state synthesis process.The results of X-ray diffraction(XRD),scanning electron microscopy(SEM) and laser particle size distribution analysis showed that only a single spinel phase and a normal distribution pattern with the average size(D50) of 0.886μm could be observed.Due to the suitable partical size distribution,the Li4Ti5O12 powders showed a promising electrochemical performance.At the discharge current densities of 0.1C(16.5 mAh/g) and 5C,the discharge capacities reached 165 mAh/g and 107 mAh/g,respectively.Even at 10C,it still reached 54 mAh/g. |
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| Keywords: | lithium titanate solid-state synthesis method sub-micronmeter high rate performance |
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