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Preparation and characterization of LiFePO4/graphene-oxide composites

Published online by Cambridge University Press:  01 February 2011

Hongming Yu ,
Ruijun Pan ,
Xuefei Chen ,
Wentao Song ,
Jian Xie  and
Xinbing Zhao
Hongming Yu
Affiliation:
[email protected], Zhejiang University, Materials Science and Engineering, Hangzhou, China
Ruijun Pan
Affiliation:
[email protected], Zhejiang University, Materials Science and Engineering, Hangzhou, Zhejiang, China
Xuefei Chen
Affiliation:
[email protected], Zhejiang University, Materials Science and Engineering, Hangzhou, Zhejiang, China
Wentao Song
Affiliation:
[email protected], Zhejiang University, Materials Science and Engineering, Hangzhou, Zhejiang, China
Jian Xie
Affiliation:
[email protected], Zhejiang University, Materials Science and Engineering, Hangzhou, Zhejiang, China
Xinbing Zhao
Affiliation:
[email protected], Zhejiang University, Materials Science and Engineering, Hangzhou, Zhejiang, China
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Abstract

LiFePO4/graphene-oxide (GNO) composites were prepared by co-precipitation method. Their structure and morphology were investigated by X-ray diffraction, Fourier transform infrared spectra, field emission scanning electron microscopy, and transmission electron microscopy. A low content of GNO can be uniformly dispersed in the matrix of LiFePO4 nano particles, while at a higher content, GNO will aggregate severely and has a negative effect on the electrochemical performance of LiFePO4. Further heat treatment can improve the crystallinity of LiFePO4, and improve the electrochemical performance of LiFePO4 with a relatively low content of GNO.

Keywords

compositeenergy storagenanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1266: Symposium CC – Solid-State Batteries , 2010 , 1266-CC03-02
Copyright
Copyright © Materials Research Society 2010

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