Issue 6, 2015

Design of SnO2/C hybrid triple-layer nanospheres as Li-ion battery anodes with high stability and rate capability

Abstract

The problems of the large volume change during Li insertion and extraction and poor high-power performance of SnO2-based electrodes should be solved for their practical application. Herein, a novel SnO2/C hybrid triple-type nanosphere, in which a layer of amorphous carbon was sandwiched between the layers of the SnO2 and carbon composite, has been designed and fabricated by a top-down approach. Due to its special structure, this kind of SnO2-based electrode exhibited a considerable capacitive performance, offering a greatly enhanced cycling stability and rate capability. Its capacity remained as high as 653 mA h g−1 after the 350th cycle. The irreversible capacity decay was unprecedentedly extended to the 80th cycle. What is more, this electrode even exhibited a capacity of 260 mA h g−1 at 20 C, with a fading of less than 16% after 600 cycles and less than 22% even after 1000 cycles.

Graphical abstract: Design of SnO2/C hybrid triple-layer nanospheres as Li-ion battery anodes with high stability and rate capability

Supplementary files

Article information

Article type
Paper
Submitted
11 Oct 2014
Accepted
11 Dec 2014
First published
12 Dec 2014

J. Mater. Chem. A, 2015,3, 2748-2755

Author version available

Design of SnO2/C hybrid triple-layer nanospheres as Li-ion battery anodes with high stability and rate capability

H. Hu, H. Cheng, G. Li, J. Liu and Y. Yu, J. Mater. Chem. A, 2015, 3, 2748 DOI: 10.1039/C4TA05434B

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