Synthesis and Electrochemical Properties of LiMPO4 (M = Fe, Mn, Co) Nanocrystals in Polyol Medium
Authors: Lim, J. S.; Kim, D. H.; Jung, I. O.; Woo, C. H.; Choi, E. S.; Gim, J. H.; Kim, J.
Source: Journal of Nanoscience and Nanotechnology, Volume 10, Number 5, May 2010 , pp. 3357-3361(5)
Publisher: American Scientific Publishers
Abstract:Olivine structured LiMPO4 (M = Fe, Mn, Co) was synthesized by the solvothermal process using a polyol medium of diethylene glycol (DEG) without any further heating as a post procedure. The synthesized LiMPO4 nanoparticles exhibited an average length of 200∼400 nm, width of 200∼300 nm, and thickness of 20∼50 nm, and with well dispersed plate and rod morphologies. The Rietveld-refined X-ray diffraction (XRD) pattern of LiFePO4 exhibited a good fit with an olivine structure (space group: Pnma) and no undesirable impurity phases. The LiFePO4 nanocrystals showed a reversible capacity of 167 mAh/g, equating to a utilization efficiency of 98% of its theoretical capacity, with a good cyclability over an extended range up to 40 cycles.
Document Type: Research Article
Publication date: May 1, 2010
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