Issue 2, 2013
From the journal:

RSC Advances

Synthesis, characterization and electrochemical performance of Li2FeSiO4/C for lithium-ion batteries†

Weihua Chen,*a   Meng Lan,a   Dan Zhu,a   Cuilian Wang,a   Shangru Xue,a   Changchun Yang,a   Zexian Li,a   Jianmin Zhang*a  and  Liwei Mi*b  

* Corresponding authors

a College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, P. R. China
E-mail: chenweih@zzu.edu.cn, zhjm@zzu.edu.cn
Fax: +86-371-67781556
Tel: +86-371-67781539

b Key Laboratory for Micro-Nano Energy Storage and Conversion Materials of Henan Province, Institute of Surface Micro and Nano Materials, Xuchang University, Henan 461000, P. R. China
E-mail: mlwzzu@163.com
Fax: +86-374-2968784
Tel: +86-374-2968784

Abstract

Li2FeSiO4/C was synthesized from a mixture of Li2SiO3, FeC2O4·2H2O, citric acid and sucrose via a simple solid-state, high-temperature treatment. The Li2SiO3 produced via the simple ball-milling of LiOH·H2O and H2SiO3 can simultaneously provides Li and Si. The resulting Li2FeSiO4/C sample was characterized via X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, transmission electron microscopy, and electrochemical measurements. The amount of carbon coated on the Li2FeSiO4/C particles is approximately 8.98 wt%, which can increase the conductivity of the materials. However, byproduct LiFeO2 appears in the as-synthesized sample. The obtained Li2FeSiO4/C sample exhibits an initial discharge capacity that exceeds 170 mA h g−1 and a cyclic discharge capacity of approximately 120 mA h g−1 at a current density of 10 mA g−1 under room temperature.

Graphical abstract: Synthesis, characterization and electrochemical performance of Li2FeSiO4/C for lithium-ion batteries

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Article information

DOI
https://doi.org/10.1039/C2RA21875E
Article type
Paper
Submitted
21 Aug 2012
Accepted
05 Nov 2012
First published
06 Nov 2012

RSC Adv., 2013,3, 408-412

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Synthesis, characterization and electrochemical performance of Li2FeSiO4/C for lithium-ion batteries

W. Chen, M. Lan, D. Zhu, C. Wang, S. Xue, C. Yang, Z. Li, J. Zhang and L. Mi, RSC Adv., 2013, 3, 408 DOI: 10.1039/C2RA21875E

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