Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 566, Issue -, Pages 206-211Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.03.041
Keywords
Li-ion battery; Cathode materials; LiFePO4; Li3PO4 coating; Rate performance
Categories
Funding
- Shenzhen-Hong Kong Innovation Circle project (Shenzhen Science and Technology Plan Foundation) [08LH-03]
Ask authors/readers for more resources
Li3PO4 coating on the surface of LiFePO4 particles was prepared by direct dispersing LiFePO4 precursor in starch slurry with nano-Li3PO4. The existence of nano-Li3PO4 was confirmed with X-ray powder diffraction (XRD). And the particle size and morphology were observed by scanning electron microscope (SEM) and transmission electron microscope analysis (TEM). The effects of the mixture coating on rate performance of LiFePO4 cathode vs Li anode at25 degrees C was investigated. Li3PO4 and carbon mixing coated LiFePO4 cathode materials exhibited markedly improved rate capability relative to bare carbon-coated LiFePO4. Analyses on cell impedance showed that the Li3PO4 coating decreased the interfacial impedance. Transmission electron microscope analysis, electrochemical impedance spectroscopy (EIS) and cyclic voltammograms (CV) were carried out to explain the reason of better rate performance by Li3PO4 coating. (C) 2013 Published by Elsevier B.V.
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