| Mg掺杂对锂离子电池材料Li4Ti5O12性能的影响 |
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| 引用本文： | 段文升,朱继平,郭超,徐超,司双,徐晓明. Mg掺杂对锂离子电池材料Li4Ti5O12性能的影响[J]. 合肥工业大学学报(自然科学版), 2009, 32(7) |
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| 作者姓名： | 段文升 朱继平 郭超 徐超 司双 徐晓明 |
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| 作者单位： | 合肥工业大学,材料科学与工程学院,安徽,合肥,230009;合肥国轩高科动力能源有限公司,安徽,合肥,230011 |
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| 基金项目： | 合肥国轩高科动力能源公司基金，安徽省自然科学基金 |
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| 摘 要： | 以固相反应法合成了尖晶石型Li4Ti5O12电极材料,通过掺杂Mg以提高其导电性及综合性能.XRD 表征了材料的结构特征,并通过激光粒度分析仪进行了粒度分析;用循环伏安、充放电曲线和循环次数考察了掺杂产物的电化学性能;在0.1C的放电倍率下放电,Li4Ti5O12的首次放电容量为158 mAh/g,结果表明掺杂了Mg的LiTiO产品的电化学性能和循环性能得到了很大改善.
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| 关 键 词： | 镁掺杂 负极材料 Li4Ti5O12 |
Effects of magnesium doping on the performance of lithium ion battery material Li4Ti5O12 |
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| DUAN Wen-sheng,ZHU Ji-ping,GUO Chao,XU Chao,SI Shuang,XU Xiao-ming. Effects of magnesium doping on the performance of lithium ion battery material Li4Ti5O12[J]. Journal of Hefei University of Technology(Natural Science), 2009, 32(7) |
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| Authors: | DUAN Wen-sheng ZHU Ji-ping GUO Chao XU Chao SI Shuang XU Xiao-ming |
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| Abstract: | The spinel-type electrode material Li4Ti5O12 was synthesized by solid state reaction. Magnesium ions were doped to improve the conductivity and integrated performance. The samples were characterized by XRD and the grain size analyses were conducted by the laser particle-size analyzer. Mg doped Li4Ti5O12 materials were characterized by cyclic voltammetry, the curve of charging and discharging and cycle times. At the 0.1C discharging rate, the first specific discharge capacity of Mg doped lithium titanate was 158 mAh/g.The results show that the products of the Mg-doped Li4Ti5O12 materials had improved electrochemical properties and cycle performance. |
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| Keywords: | Li4Ti5O12 magnesium doped anode material Li4Ti5O12 |
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