Issue 7, 2013
From the journal:

Journal of Materials Chemistry A

A carbon-coated Li3V2(PO4)3 cathode material with an enhanced high-rate capability and long lifespan for lithium-ion batteries

Jing Su,a   Xing-Long Wu,a   Jong-Sook Lee,b   Jaekook Kimb  and  Yu-Guo Guo*ab  

* Corresponding authors

a CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
E-mail: ygguo@iccas.ac.cn
Fax: +86 10-82617069
Tel: +86 10-82617069

b School of Materials Science and Engineering, Chonnam National University (WCU), Gwangju 500-757, Republic of Korea

Abstract

A facile sol–gel approach combined with a carbon-coating technique via high-temperature thermally decomposing C2H2 has been developed for the synthesis of a Li3V2(PO4)3/C (LVP/C) cathode material employing the biomass of phytic acid as an eco-friendly phosphorus source. The effects of the carbon-coating on the structural, morphological and electrochemical properties of LVP have been investigated. Compared with pristine LVP, the LVP/C composite presents a higher discharge capacity of 127 mA h g−1 at 0.1 C, better rate capability and long-term cyclability in the voltage range of 3.0–4.3 V. Even at a high charge–discharge rate of 5 C, it can still deliver a reversible capacity of 107 mA h g−1 over 400 cycles without obvious fading, demonstrating great potential as a superior cathode material for lithium-ion batteries.

Graphical abstract: A carbon-coated Li3V2(PO4)3 cathode material with an enhanced high-rate capability and long lifespan for lithium-ion batteries

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Article information

DOI
https://doi.org/10.1039/C2TA01254E
Article type
Paper
Submitted
26 Nov 2012
Accepted
17 Dec 2012
First published
17 Dec 2012

J. Mater. Chem. A, 2013,1, 2508-2514

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A carbon-coated Li3V2(PO4)3 cathode material with an enhanced high-rate capability and long lifespan for lithium-ion batteries

J. Su, X. Wu, J. Lee, J. Kim and Y. Guo, J. Mater. Chem. A, 2013, 1, 2508 DOI: 10.1039/C2TA01254E

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