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Issue 57, 2016, Issue in Progress
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Preparation of three-dimensional free-standing nano-LiFePO4/graphene composite for high performance lithium ion battery

Yahui Du,†ab   Yufeng Tang,†b   Fuqiang Huangb  and  Chengkang Chang*a  
Author affiliations

* Corresponding authors

a School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 200235, P. R. China
E-mail: ckchang@sit.edu.cn

b CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China

Abstract

Electric vehicles and high-power electrical appliances demand batteries of a high rate discharge performance, but it is still a challenge due to large electric resistance for very fast charge transport. In this paper, a nano-LiFePO4/graphene (G/LiFePO4) composite is synthesized by one-pot in situ hydrothermal method. The LiFePO4 nanoparticles are wrapped by graphene sheets on a three-dimensional (3D) free-standing graphene foam obtained from the self-assembling of graphene oxide, which is used as a highly conductive current collector. The as-prepared G/LiFePO4 composite has a 3D conductive network and can be directly used for the cathode without any conductive carbon black, binder or aluminum current collector. The electrochemical measurements show it has excellent rate performance, the 10C-rate specific discharge capacity is 115 mA h gāˆ’1. The overall electrochemical performance from this 3D self-assembly free-standing structure is superior in the similar reported system.

Graphical abstract: Preparation of three-dimensional free-standing nano-LiFePO4/graphene composite for high performance lithium ion battery

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Article information

https://doi.org/10.1039/C6RA08937B
Submitted
07 Apr 2016
Accepted
23 May 2016
First published
23 May 2016
RSC Adv., 2016,6, 52279-52283
Article type
Paper
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Preparation of three-dimensional free-standing nano-LiFePO4/graphene composite for high performance lithium ion battery

Y. Du, Y. Tang, F. Huang and C. Chang, RSC Adv., 2016, 6, 52279
DOI: 10.1039/C6RA08937B

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