Effects of Precursor Structure and the Content of the SO4 2- on the Electrochemical Performance of LiNixCoyMn1-x-yO2 Cathode Materials

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Cui, Yan^1 ; Fu, Qiang^1

China National Institute of Standardization, No. 4 Zhichun Road, Beijing, China^1

关键词: Cath-ode materials;    Controlled crystallization methods;    Cycle property;    Electrochemical performance;    High capacity;    Primary particles;    Specific capacities;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/4/042068/pdf
DOI  :  10.1088/1755-1315/170/4/042068

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In the present work, the effects of the SO4 2- content, the crystal growth pattern, the agglomeration of the primary particle on the electrochemical performance are first studied systematically. The LiNi0.4Co0.2Mn0.4O2 precursors are obtained by the controlled crystallization method by different conditions. But the larger primary particle is not beneficial to its electrochemical performances. All the conclusions show that sample 2 possesses the best electrochemical performances, including high capacity, excellent cycle properties. The initial specific capacity at 1C rate of sample 2 is 145.2 mAh/g operated between 4.3and 2.7 V, and 99.4% capacity is maintained after 50 cycles.