TITLE:
Electrochemical Performance of LiFePO4/C via Coaxial and Uniaxial Electrospinning Method
AUTHORS:
Yan Hu, Dawei Gu, Hongying Jiang, Lei Wang, Hongshun Sun, Jipeng Wang, Linjiang Shen
KEYWORDS:
LiFePO4/C, Electrospinning, Porous Structure, Diffusion Coefficient
JOURNAL NAME:
Advances in Chemical Engineering and Science,
Vol.6 No.2,
April
19,
2016
ABSTRACT: In this work, LiFePO4/C
(LFP/C) cathode materials with superior electrochemical performance have been
prepared by coaxial and uniaxial electrospinning method. The electrode
materials were characterized by X-ray diffraction (XRD), scanning electron
microscopy (SEM), and transmission electron microscopy (TEM). Also, cyclic
voltammetry (CV), galvanostatic charge-discharge, and electrochemical impedance
spectroscopy (EIS) measurements were performed on these materials. The
experimental results indicate that the electrochemical properties of LFP/C-C,
such as specific capacity, coulombic efficiency, Li+ diffusion coefficient and
overpotential are significantly improved. The enhanced electrical conductivity
and polarization of the LFP/C-C electrode are mainly due to its porous
morphology and amorphous carbon coating layer.