Title of article :
Preparation of porous SnO2 helical nanotubes and SnO2 sheets
Author/Authors :
Ling Fei Luo، نويسنده , , Yun Xu، نويسنده , , Zheng Chen، نويسنده , , Bin Yuan، نويسنده , , Xiaofei Wu، نويسنده , , Joshua Hill، نويسنده , , Qianglu Lin، نويسنده , , Shuguang Deng، نويسنده , , Paul Andersen، نويسنده , , Yunfeng Lu، نويسنده , , Hongmei Luo، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2013
Pages :
6
From page :
249
To page :
254
Abstract :
We report a surfactant-free chemical solution route for synthesizing one-dimensional porous SnO2 helical nanotubes templated by helical carbon nanotubes and two-dimensional SnO2 sheets templated by graphite sheets. Transmission electron microscopy, X-ray diffraction, cyclic voltammetry, and galvanostatic discharge–charge analysis are used to characterize the SnO2 samples. The unique nanostructure and morphology make them promising anode materials for lithium-ion batteries. Both the SnO2 with the tubular structure and the sheet structure shows small initial irreversible capacity loss of 3.2% and 2.2%, respectively. The SnO2 helical nanotubes show a specific discharge capacity of above 800 mAh g−1 after 10 charge and discharge cycles, exceeding the theoretical capacity of 781 mAh g−1 for SnO2. The nanotubes remain a specific discharge capacity of 439 mAh g−1 after 30 cycles, which is better than that of SnO2 sheets (323 mAh g−1).
Keywords :
Oxides , Nanostructures , Electrochemical properties , Chemical synthesis , Composite materials
Journal title :
Materials Chemistry and Physics
Serial Year :
2013
Journal title :
Materials Chemistry and Physics
Record number :
1059937
Link To Document :
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