TY - JOUR
T1 - Preparation of porous SnO2 helical nanotubes and SnO2 sheets
AU - Fei, Ling
AU - Xu, Yun
AU - Chen, Zheng
AU - Yuan, Bin
AU - Wu, Xiaofei
AU - Hill, Joshua
AU - Lin, Qianglu
AU - Deng, Shuguang
AU - Andersen, Paul
AU - Lu, Yunfeng
AU - Luo, Hongmei
N1 - Funding Information:
The work at NMSU was supported from Department of Defense, Air Force Research Laboratory through contract FA8650-11-C-2127. The work at UCLA was supported by the Center for Molecularly Assembled Material Architectures for Solar Energy Production, Storage and Carbon Capture, an Energy Frontier Research Center funded by the U.S. Department of Energy , Office of Science , and Office of Basic Energy Sciences under award DE-SC0001342, and IMRA Inc. America.
PY - 2013/6/15
Y1 - 2013/6/15
N2 - 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).
AB - 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).
KW - Nanostructures Oxides Electrochemical properties Composite materials Chemical synthesis
UR - http://www.scopus.com/inward/record.url?scp=84877578634&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84877578634&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2013.03.029
DO - 10.1016/j.matchemphys.2013.03.029
M3 - Article
AN - SCOPUS:84877578634
SN - 0254-0584
VL - 140
SP - 249
EP - 254
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
IS - 1
ER -