Submicron-Sized Clusters of LiFePO₄-C Nanoparticles for Lithium-Ion Battery Cathodes

Authors: Xu, Yunlong; Tao, Lili; Du, Guodong; Guo, Zaiping; Xu, Yonggang; Zhang, Shucheng

Source: Advanced Science Letters, Volume 4, Numbers 11-12, November 2011 , pp. 3523-3527(5)

Publisher: American Scientific Publishers

Buy & download fulltext article:

Price: $113.00 plus tax (Refund Policy)

Abstract:

Submicron-sized clusters of LiFePO₄-C nanoparticles were synthesized using a rheological phase reaction method. X-ray diffraction (XRD), scanning electron microscope (SEM), and high resolution transmission electron microscope (HRTEM) observations show that the as-prepared LiFePO₄-C composite has good crystallinity consisting of submicron-sized clusters of carbon-coated LiFePO₄ nanoparticles with size of around 50 nm. Both the graphite and disordered carbon are observed in the LiFePO₄-C from the Raman spectroscopy and a low intensity ratio of the D band to that of the G band (I_D/I_G = 0.687) is obtained, confirming the high electronic conductivity of this material. The second cycle discharge capacities are 169.6, 131.4, and 95.6 mAh · g^-1 at 0.1, 1.0, and 5.0 C, respectively. Excellent cycling performance with a discharge capacity of 80.9 mAh · g^-1 is still maintained even at a high current density of 10 °C. Our results suggest that this material is a promising cathode material for lithium ion batteries.

Keywords: LIFEPO4-C NANOPARTICLES; LITHIUM ION BATTERY; CATHODE

Document Type: Research article

DOI: http://dx.doi.org/10.1166/asl.2011.1881

Publication date: 2011-11-01

More about this publication?

ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
Editorial Board
Information for Authors
Subscribe to this Title
ingentaconnect is not responsible for the content or availability of external websites