Issue 14, 2013
From the journal:

Nanoscale

Li3V2(PO4)3@C core–shell nanocomposite as a superior cathode material for lithium-ion batteries†

Wenchao Duan,a   Zhe Hu,a   Kai Zhang,a   Fangyi Cheng,ab   Zhanliang Tao*a  and  Jun Chen*ab  

* Corresponding authors

a Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, P. R. China
E-mail: chenabc@nankai.edu.cn
Fax: +86-22-23509571
Tel: +86-22-23506808

b Synergetic Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, P. R. China

Abstract

Li3V2(PO4)3@C core–shell nanoparticles with typical sizes of 20–40 nm were synthesized using a hydrothermal-assisted sol–gel method. Ascorbic acid and PEG-400 were adopted as carbon sources and reductants. The uniform Li3V2(PO4)3@C nanocomposite obtained was composed of a Li3V2(PO4)3 core with high-phase purity and a graphitized carbon shell, which was characterized using XRD, SEM, TEM, and Raman analysis. The nanocomposite exhibited a remarkably high rate capability and long cyclability, delivering a discharge capacity of 138 mA h g−1 at 5 C within a voltage range of 3–4.8 V and the capacity retention was 86% after 1000 cycles. The superior electrochemical performance of Li3V2(PO4)3@C indicates that it has potential for application as a cathode material in advanced rechargeable lithium-ion batteries.

Graphical abstract: Li3V2(PO4)3@C core–shell nanocomposite as a superior cathode material for lithium-ion batteries

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Article information

DOI
https://doi.org/10.1039/C3NR01617J
Article type
Paper
Submitted
01 Apr 2013
Accepted
16 May 2013
First published
17 May 2013

Nanoscale, 2013,5, 6485-6490

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Li3V2(PO4)3@C core–shell nanocomposite as a superior cathode material for lithium-ion batteries

W. Duan, Z. Hu, K. Zhang, F. Cheng, Z. Tao and J. Chen, Nanoscale, 2013, 5, 6485 DOI: 10.1039/C3NR01617J

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