期刊论文

Synthesis of high capacity Li-and Mn-rich cathode materials by fast co-precipitaion method

中文

电源技术

1002-087X

2020

44

6

812-814

10.3969/j.issn.1002-087X.2020.06.005

本校为第一机构

用草酸作为沉淀剂,采用快速共沉淀法成功合成了富锂锰正极材料,并探究了不同沉淀剂/过渡金属的配比对材料性能的影响.采用扫描电子显微镜(SEM)、X射线衍射(XRD)、充放电测试对其结构和电化学性能进行了表征.结果 表明,当配比为2∶1时,合成的富锂锰正极材料具有优异的结构稳定性和电化学性能,在0.1 C下首次放电比容量达到300.2 mAh/g,在1C下循环1 00次后仍然有98.5％的容量保持率.

Using oxalic acid as the precipitant,Li-and Mn-rich layered cathode materials were successfully synthesized by fast co-precipitation method,and the effects of the ratio of precipitator/transition metal on the properties of the materials were discussed.The structure and electrochemical properties were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD) and charge-discharge test.The results show that the Li-and Mn-rich cathode materials with the ratio of 2:1 exhibit excellent structural stability and electrochemical properties.The initial discharge specific capacity deliver...