Issue 13, 2014

Fe2O3@SnO2 nanoparticle decorated graphene flexible films as high-performance anode materials for lithium-ion batteries

Abstract

A flexible graphene film decorated with spindle-like Fe2O3@SnO2 nanoparticles was fabricated through vacuum filtration of Fe2O3@SnO2 and GO mixing solution, followed by thermal reduction. The core–shell structured Fe2O3@SnO2 nanoparticles were synthesized through a facile hydrothermal route, which avoided agglomeration of Fe2O3 and SnO2 nanoparticles and was beneficial for electrolyte diffusion. Microstructure characterizations showed that the spindle-like Fe2O3@SnO2 nanoparticles were uniformly dispersed between layered graphene nanosheets, forming a sandwich-like structure. The unique interleaved structure was favorable for lithium ion diffusion and electron transfer. As binder-free electrodes for lithium-ion batteries, the flexible Fe2O3@SnO2/GS films exhibited discharge and charge capacities of 2063 and 1255 mA h g−1 respectively, with an excellent cycling performance of 1015 mA h g−1 even after 200 cycles. The specific capacity of the Fe2O3@SnO2/GS electrode is higher than that of both Fe2O3/GS and SnO2/GS electrodes, indicating a positive synergistic effect of Fe2O3 and SnO2 on the improvement of electrochemical performance.

Graphical abstract: Fe2O3@SnO2 nanoparticle decorated graphene flexible films as high-performance anode materials for lithium-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
26 Nov 2013
Accepted
11 Jan 2014
First published
14 Jan 2014

J. Mater. Chem. A, 2014,2, 4598-4604

Author version available

Fe2O3@SnO2 nanoparticle decorated graphene flexible films as high-performance anode materials for lithium-ion batteries

S. Liu, R. Wang, M. Liu, J. Luo, X. Jin, J. Sun and L. Gao, J. Mater. Chem. A, 2014, 2, 4598 DOI: 10.1039/C3TA14897A

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