| LiNi1-x-yCoxMnyO2正极材料的制备与电化学性能 |
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| 引用本文： | 朱余银,李晶. LiNi1-x-yCoxMnyO2正极材料的制备与电化学性能[J]. 强激光与粒子束, 2019, 31(5): 059001-1-059001-8. DOI: 10.11884/HPLPB201931.180352 |
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| 作者姓名： | 朱余银 李晶 |
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| 作者单位： | 1.西南科技大学 环境与资源学院, 四川 绵阳 621010 |
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| 基金项目： | 国家高技术发展计划项目2013AA0509西南科技大学博士基金项目18zx712201西南科技大学学科建设软科学研究项目18sxb08501 |
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| 摘 要： | LiNi1-x-yCoxMnyO2正极材料作为最有商业化前途的锂离子电池正极材料,近年来成为研究者关注的焦点。但目前针对该材料合成工艺的研究还较少。对LiNi0.8Co0.15Mn0.05O2开展了不同的烧结工艺研究,并对制备出的正极材料进行了表征和性能测试。研究发现在0.1C (电池容量额定值)倍率下充放电比容量为200 mA·h·g-1左右,在1C倍率循环100次下,480 ℃@3 h + 780 ℃@5 h和500 ℃@5 h + 780 ℃@10 h两种烧结工艺下容量保持率分别为94%和86%,说明用这两种工艺制备的正极材料的综合性能最优。
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| 关 键 词： | 三元正极材料 烧结工艺 电化学性能 锂离子电池 |
| 收稿时间： | 2018-12-24 |
Preparation and electrochemical performances of ternary LiNi1-x-yCoxMnyO2 cathode material |
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| Affiliation: | 1.School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, China2.School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China |
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| Abstract: | As the most promising commercial lithium-ion battery, the LiNi1-x-yCoxMnyO2 cathode have become the focus of researchers in recent years. However, there are less researches on the synthetic process of this material. This paper discusses various sintering processes of LiNi0.8Co0.15Mn0.05O2, and the characterization and electrochemical performances testing of the prepared cathode materials. The research shows that the material has higher specific capacity (about 200 mA·h·g-1) at 0.1C (C is battery capacity rating value) charging-discharging rate. At 1C and 100 times of charging-discharging, the capacity retention ratios of 480 ℃@3 h + 780 ℃@5 h and 500 ℃@5 h + 780 ℃@10 h sintering processes are 94% and 86%, respectively, which illustrates the synthetical properties of the cathode materials prepared by these two processes are optimal. |
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