| Effect of annealing treatment on electrochemical property of LiNi0.5Mn1.5O4 spinel |
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| 引用本文： | 张宝 王志兴 郭华军. Effect of annealing treatment on electrochemical property of LiNi0.5Mn1.5O4 spinel[J]. 中国有色金属学会会刊, 2007, 17(2): 287-290. DOI: 10.1016/S1003-6326(07)60086-7 |
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| 作者姓名： | 张宝 王志兴 郭华军 |
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| 作者单位： | School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | Project supported by the Scientific Research Foundation for the Returned 0verseas Chinese Scholar |
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| 摘 要： | LiNi0.5Mn1.5O4 was prepared under different cooling conditions. The electrochemical properties of LiNi0.5Mn1.5O4 prepared under different cooling conditions were investigated. The results show that LiNi0.5Mn1.5O4 synthesized with or without annealing treatment has similar X-ray diffraction patterns that can be indexed to cubic spinel structure. The mass loss occurring above 650℃ during the heating process can be mostly gained during the cooling process. LiNi0.5Mn1.5O4 synthesized with an annealing treatment exhibits almost one voltage plateau at around 4.7 V and higher capacity with a quick fading upon cycling, whereas LiNi0.5Mn1.5O4 synthesized without annealing treatment shows two voltage plateaus at around 4.1 and 4.7 V and superior capacity retention upon cycling both at rates of 1/7C and 1 C, though the capacity is not high.
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| 关 键 词： | 退火处理 LiNi0.5Mn1.5O4 尖晶石 电化学性质 阴极材料 锂离子电池 |
| 收稿时间： | 2006-03-28 |
| 修稿时间： | 2006-09-25 |
Effect of annealing treatment on electrochemical property of LiNi0.5Mn1.5O4 spinel |
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| ZHANG Bao,WANG Zhi-xing,GUO Hua-jun. Effect of annealing treatment on electrochemical property of LiNi0.5Mn1.5O4 spinel[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(2): 287-290. DOI: 10.1016/S1003-6326(07)60086-7 |
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| Authors: | ZHANG Bao WANG Zhi-xing GUO Hua-jun |
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| Affiliation: | School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China |
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| Abstract: | LiNi0.5Mn1.5O4 was prepared under different cooling conditions. The electrochemical properties of LiNi0.5Mn1.5O4 prepared under different cooling conditions were investigated. The results show that LiNi0.5Mn1.5O4 synthesized with or without annealing treatment has similar X-ray diffraction patterns that can be indexed to cubic spinel structure. The mass loss occurring above 650 °C during the heating process can be mostly gained during the cooling process. LiNi0.5Mn1.5O4 synthesized with an annealing treatment exhibits almost one voltage plateau at around 4.7 V and higher capacity with a quick fading upon cycling, whereas LiNi0.5Mn1.5O4 synthesized without annealing treatment shows two voltage plateaus at around 4.1 and 4.7 V and superior capacity retention upon cycling both at rates of 1/7C and 1C, though the capacity is not high. |
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| Keywords: | lithium ion battery cathode material LiNi0.5Mn1.5O4 annealing treatment electrochemical property |
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