Synthesis and Performance of Fusiform and Sphere Hierarchical Layered Li-Rich Materials Li1.2Mn0.54Ni0.13Co0.13O2 for Lithium-Ion Batteries

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Yang, Jinge^1 ; Li, Yujie^1 ; Zheng, Chunman^1

College of Aerospace Science and Engineering, National University of Defense Technology, Changsha

410073, China^1

关键词: Capacity retention;    Cath-ode materials;    Cycle performance;    Cycling stability;    High capacity;    Hydrothermal methods;    Micro-scale;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/4/042032/pdf
DOI  :  10.1088/1757-899X/394/4/042032

来源: IOP

【 摘 要 】

Layered Li-rich cathode materials have a series of issues such as sharp voltage fading and bad cycling stability. To cure the problem, we developed a urea-based hydrothermal method followed a heat treatment to synthesize microscale fusiform and sphere hierarchical Li1.2Mn0.54Ni0.13Co0.13O2 assembled with nanoparticle. The hierarchical fusiform Li1.2Mn0.54Ni0.13Co0.13O2 present high capacity of 259mAhg-1 at 0.1C and 270mAhg-1 at 0.05C and capacity retention of fusiform sample is up to 96% after 30 cycles at 0.1C, showing an excellent cycle performance.