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| 富锂锰基Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_2正极材料的制备及电化学性能研究 | |
| 引用本文： | 张新河,汤春微,马小林,杜陈强,唐致远. 富锂锰基Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_2正极材料的制备及电化学性能研究[J]. 电源技术, 2017, 0(11): 1513-1515. DOI: 10.3969/j.issn.1002-087X.2017.11.001 |
| 作者姓名： | 张新河 汤春微 马小林 杜陈强 唐致远 |
| 作者单位： | 1. 天津大学化工学院应用化学系,天津,300072;2. 东莞迈科新能源有限公司,广东东莞,523800;3. 天津工业大学理学院,天津,300387 |
| 基金项目： | 广东省高性能锂离子电池研发与产业化创新团队项目 |
| 摘 要： | 采用新颖的一步共沉淀法合成富锂锰基Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_2正极材料。通过X射线衍射光谱法(XRD)、扫描电子显微镜法(SEM)和电化学测试对合成材料的晶体结构、形貌及电化学性能进行了测试和表征。结果表明,所制备Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_2正极材料具有较好的多面体形貌,材料颗粒粒径小于500 nm。在2.0~4.8 V充放电区间内,在18 m A/g进行充放电,所制备材料的首次放电比容量达到209.0 m Ah/g,循环50次后容量保持率为87.7%。 |
| 关 键 词： | 锂离子电池 共沉淀法 Li1.2Mn0.54Ni0.13Co0.13O2 正极材料 |
Synthesis and electrochemical performance of Li1.2Mn0.54Ni0.13Co0.13O2 cathode material for lithium ion battery |
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| Abstract: | The layered Li1.2Mn0.54Ni0.13Co0.13O2 lithium-rich manganese-based solid solution cathode material was synthesized by a novel co-precipitation method.The structure,morphology and electrochemical performance of Li1.2Mn0.54Ni0.13Co0.13O2 were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM) and electrochemical tests.The results show that the material has a regular polyhedron shape with the particle size below 500 nm.This material can deliver a high initial discharge specific capacity of 209.0 mAh/g at the current of 18 mA/g within 2.0-4.8 V.After 50 cycles,the sample still can keep capacity retention of 87.7％. |
| Keywords: | lithium-ion batteries co-precipitation Li1.2Mn0.54Ni0.13Co0.13O2 cathode material |
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