Abstract Well-dispersed SnO2 nanorods with diameter of 4--15 nm and length of 100--200 nm are synthesised through a hydrothermal route and their potential as anode materials in lithium-ion batteries is investigated. The observed initial discharge capacity is as high as 1778 mA$\cdot$h/g, much higher than the theoretical value of the bulk SnO2 (1494 mA$\cdot$h/g). During the following 15 cycles, the reversible capacity decreases from 929 to 576 mA$\cdot$h/g with a fading rate of 3.5% per cycle. The fading mechanism is discussed. Serious capacity fading can be avoided by reducing the cycling voltages from 0.05--3.0 to 0.4--1.2 V. At the end, SnO2 nanorods with much smaller size are synthesized and their performance as anode materials is studied. The size effect on the electrochemical properties is briefly discussed.
Received: 09 March 2009
Revised: 30 April 2009
Accepted manuscript online:
Fund: Project supported by the National
Key Basic Research Program of China (Grant No 2007CB310500) and the
Chinese Ministry of Education (Grant No 705040), the National
Natural Science Foundation of China (Grant Nos 90606009, 60571044
and 10774174).
Cite this article:
Shi Song-Lin(施松林), Liu Yong-Gang(刘永刚), Zhang Jing-Yuan(张敬源), and Wang Tai-Hong(王太宏) Electrochemical properties of SnO2 nanorods as anode materials in lithium-ion battery 2009 Chin. Phys. B 18 4564
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