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Novel Non-aqueous Sol-Gel Synthesis of Carbon-Coated LiMPO4 (M = Fe, Mn, Co) for Lithium Ion Batteries

Published online by Cambridge University Press:  01 February 2011

Jingsi Yang  and
Jun John Xu
Jingsi Yang
Affiliation:
Materials Science and Engineering Rutgers, the State University of New Jersey Piscataway, NJ 08854, USA
Jun John Xu
Affiliation:
Materials Science and Engineering Rutgers, the State University of New Jersey Piscataway, NJ 08854, USA
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Abstract

A simple organic solvent based sol-gel method for synthesis of carbon-coated LiFePO4 is developed. Phase pure LiFePO4 with uniform size of 200–300 nm and no agglomeration is obtained, with 1.8 wt % surface carbon formed in-situ. Such a material gives specific discharge capacities of 150 mAh/g and 145 mAh/g at C/5 and 2C at room temperature, respectively, with desirable cycling stability. The dependence of particle size and morphology on precursor concentrations is opposite to conventional solution based methods. Other LiMPO4 (M = Mn, Co, Ni, etc) with favorable physical characteristics can be synthesized the same way.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 835: Symposium K – Solid-State Ionics , 2004 , K11.9
Copyright
Copyright © Materials Research Society 2005

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References

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