Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 18, Issue 9, Pages 2401-2410Publisher
SPRINGER
DOI: 10.1007/s10008-014-2481-4
Keywords
Lithium iron phosphate (LiFePO4); Lattice parameters; Crystal texture; Lithium-ion diffusion
Categories
Funding
- National Natural Science Foundation of China [20927007, 21075083]
Ask authors/readers for more resources
LiFePO4/C cathode materials were synthesized by hydrothermal process and subsequently annealed process. The influence of the processing parameters on the structure properties including crystallite size, lattice parameters, and (020) crystallographic direction of the samples prepared at different conditions were investigated by X-ray powder diffraction (XRD). In order to determine the influence of vacancies and inter-site Fe mixing on the lithium diffusion coefficients, the subsequent electrochemical impedance spectra (EIS) measurements and cyclic voltammogram (CV) measurements were carried out. We believe that the sample prepared at optimized conditions of synthesis temperature at 180 A degrees C for 3 h and subsequently calcined at 750 A degrees C for 60 min with the mass ratio (LiFePO4 precursor to glucose) of 1:0.1 had higher purity, higher crystallinity, some preferred crystal orientation with a (020) texture, and higher lithium diffusion coefficients, moreover, exhibits excellent rate performance and cycling stability at room temperature.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available