Electrochemical Characteristics of GeOx-Coated Graphitic Carbon as Anode Material in Lithium-Ion Batteries

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

Zhou, Xiaoxiong^1 ; Xu, Jing^1 ; Li, Dezhan^1 ; Liu, Shuangke^1 ; Chen, Yufang^1 ; Zheng, Chunman^1 ; Xie, Wei^1

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

410073, China^1

关键词: Capacity retention;    Chemical reduction methods;    Electrochemical characteristics;    Electrochemical performance;    Electrode capacity;    Galvanostatic charge/discharge;    Reversible capacity;    Structure and morphology;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/4/042033/pdf
DOI  :  10.1088/1757-899X/394/4/042033

来源: IOP

【 摘 要 】

In the present study, GeOx-coated graphitic carbon composites were synthesized by coating graphitic carbon with GeOx through chemical reduction method. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to characterize the structure and morphology of the composites, while galvanostatic charge/discharge and cyclic voltammetry (CV) were carried out to measure their electrochemical performance as an anode material for Li-ion batteries. The experimental results indicated that the GeOx-coated graphitic carbon composites show initial reversible capacity of 465.6 mAh g-1. After 30 cycles, the electrode capacity was still maintained at 437.6 mAh g-1, and the capacity retention is 93.98%.