Preparation and performance of LiNi0.8Co0.15Al0.05O2 cathode material of lithium ion battery
-
摘要: 采用共沉淀法制备粒径10 μm左右的前驱体Ni0.8Co0.15Al0.05（CO3）x（OH）y，然后采用该前驱体和LiOH·H2O成功制备了锂离子电池正极材料LiNi0.8Co0.15Al0.05O2（LiNCA），并详细研究了煅烧氛围、煅烧温度和煅烧方式等条件对LiNCA电化学性能的影响。研究表明，在O2中煅烧获得的LiNCA放电容量达到170 mAh·g-1，50次循环后容量保持率达到95%，性能明显优于空气氛围中煅烧得到的LiNCA。在O2氛围下，700~750℃温度范围煅烧得到的LiNCA性能最好，煅烧温度过高或过低，LiNCA性能均明显下降。将前驱体在O2氛围中450℃条件预煅烧，然后与LiOH·H2O在700~750℃混合煅烧的煅烧方式，得到的LiNCA放电容量明显提高，可达190 mAh·g-1。Abstract: By means of coprecipitation, the precursor Ni0.8Co0.15Al0.05(CO3)x (OH)y with about 10 μm particle size was prepared. The cathode material of lithium ion battery, LiNi0.8Co0.15Al0.05O2 (LiNCA) was fabricated successfully with the precursor and LiOH·H2O, and the effects of calcination atmosphere, calcination temperature and calcination method on electrochemical performances were studied. The results show that the discharge specific capacity of the LiNCA calcined in oxygen reaches 170 mAh·g-1, and the capacity retention ratio after 50 cycles reaches 95%, which is better than the LiNCA calcined in air. In the oxygen atmosphere, the LiNCA obtains the best performance when the calcination temperature is in range of 700 to 750℃. If the calcination temperature is too high or too low, the performance of LiNCA decreases significantly. When the precursor is precalcined at 450℃ in oxygen atmosphere, and then calcined with mixed LiOH·H2O at 700 to 750℃, the LiNCA discharge specific capacity reaches 190 mAh·g-1, which increases significantly.
-
Keywords:
- lithium ion battery /
- cathode material /
- LiNi0.8Co0.15Al0.05O2 /
- precursor /
- coprecipitation /
- calcination
-
-
期刊类型引用(6)
1. 刘应书，张璇，卞文博，姜理俊，刘文海，侯环宇，孙方舟，杨雄，李子宜. 涂覆型蜂窝体催化剂的制备与烟气一氧化碳催化净化性能. 复合材料学报. 2023(08): 4539-4548 . 
本站查看
2. 李婷婷，王薇，范迎迎，薛东涵，戴明珏，张琦，刘博，韩博林，关桦楠. 接枝功能化磁性纳米粒子去除饮用水中Cu~(2+)研究. 哈尔滨商业大学学报(自然科学版). 2020(01): 25-29 . 百度学术
3. 龙星宇，陈柯锦，谭兴力，李秋华. Fe_3O_4@MnO_2复合纳米材料的制备及其对染料刚果红的吸附研究. 化工新型材料. 2020(05): 255-260+265 . 百度学术
4. 张磊. Fe_3O_4-MnO_2复合材料催化降解水中有机污染物的研究进展. 化工环保. 2020(05): 474-479 . 百度学术
5. 杨思楠，赵萍，陈永春，安士凯，郑刘根. 改性蛭石-蒙脱土对煤矸石充填复垦区镉污染土壤的修复. 环境化学. 2020(10): 2777-2783 . 百度学术
6. 于常武，刘春怡，周立岱，陈国伟，郭星. 磁载TiO_2光催化剂处理喷漆废水的影响因素及动力学特性. 环境污染与防治. 2019(10): 1137-1141 . 百度学术
其他类型引用(9)
-
计量
- 文章访问数:
- HTML全文浏览量:
- PDF下载量:
- 被引次数: 15
下载:
