Issue 33, 2013
From the journal:

Journal of Materials Chemistry A

Facile encapsulation of nanosized SnO2 particles in carbon nanotubes as an efficient anode of Li-ion batteries

Xin Liu,†a   Minghao Wu,†b   Mingrun Li,a   Xiulian Pan,*a   Jian Chen*b  and  Xinhe Baoa  

* Corresponding authors

a Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, P. R. China
E-mail: panxl@dicp.ac.cn

b Advanced Rechargeable Batteries Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, P. R. China
E-mail: chenjian@dicp.ac.cn

Abstract

An efficient anode with a superior high-rate capability and stability remains a challenge for development of high performance Li-ion batteries. We present a new concept by encapsulating 2 nm-sized SnO2 nanocrystals in the channels of carbon nanotubes (SnO2-in-CNTs). Characterization shows that the confined space does not only stabilize the small nanoparticles but also alleviates the stress caused by the large volume change of tin species during the charging–discharging process. In addition, well crystallized graphitic structure of CNTs with a positive curvature provides a good contact between SnO2 nanoparticles and graphene layers, and excellent electronic conductivity. As a result, SnO2-in-CNTs as an anode of lithium ion battery exhibit stable cyclability and superior high-rate capability relative to SnO2 nanoparticles dispersed on the outer walls of CNTs particularly under a high current density. The charge capacity remains about 560 mA h g−1 after 50 cycles at 50 mA g−1, and even around 400 mA h g−1 at 1000 mA g−1. Additionally, the facile preparation method we have developed makes such encapsulates appealing for further optimization and applications.

Graphical abstract: Facile encapsulation of nanosized SnO2 particles in carbon nanotubes as an efficient anode of Li-ion batteries

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Article information

DOI
https://doi.org/10.1039/C3TA00049D
Article type
Paper
Submitted
05 Jan 2013
Accepted
12 Apr 2013
First published
15 Apr 2013

J. Mater. Chem. A, 2013,1, 9527-9535

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Facile encapsulation of nanosized SnO2 particles in carbon nanotubes as an efficient anode of Li-ion batteries

X. Liu, M. Wu, M. Li, X. Pan, J. Chen and X. Bao, J. Mater. Chem. A, 2013, 1, 9527 DOI: 10.1039/C3TA00049D

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