Issue 27, 2011
From the journal:

Journal of Materials Chemistry

Hollow α-LiVOPO4 sphere cathodes for high energy Li-ion battery application

Kuppan Saravanan,a   Hwang Sheng Lee,b   Mirjana Kuezma,b   Jagadese J Vittal*a  and  Palani Balaya*b  

* Corresponding authors

a National University of Singapore (NUS), 3 Science Drive 3, Singapore
E-mail: chmjjv@nus.edu.sg

b Department of Mechanical Engineering, NUS, Singapore
E-mail: mpepb@nus.edu.sg
Fax: +65-6775-4710

Abstract

Hollow spheres of electroactive α-LiVOPO4 were synthesized via a simple one step solvothermal method. A powder X-ray diffraction study revealed that the obtained product crystallized in the triclinic α-LiVOPO4 phase. The morphology of the product was largely influenced by reaction conditions such as reaction time, temperature, etc., and the product morphology was easily fine tuned from hollow spheres to hard spheres upon changing the reaction time. Without any post-heat treatment or milling with conductive additives, these hollow spheres exhibited comparatively large reversible Li storage of 130 and 61 mA h g−1 at 0.1 and 1.7 C respectively. Excellent capacity retention and long term cycling stability were demonstrated by the hollow spheres of α-LiVOPO4. We believe that α-LiVOPO4 is likely to be a prospective cathode material for high-voltage Li ion batteries application.

Graphical abstract: Hollow α-LiVOPO4 sphere cathodes for high energy Li-ion battery application

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Article information

DOI
https://doi.org/10.1039/C0JM04428H
Article type
Paper
Submitted
17 Dec 2010
Accepted
18 Feb 2011
First published
24 Mar 2011

J. Mater. Chem., 2011,21, 10042-10050

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Hollow α-LiVOPO4 sphere cathodes for high energy Li-ion battery application

K. Saravanan, H. S. Lee, M. Kuezma, J. J. Vittal and P. Balaya, J. Mater. Chem., 2011, 21, 10042 DOI: 10.1039/C0JM04428H

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