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Synthesis of urchin-like Sn-ZnO-C composite and its enhanced electrochemical performance for lithium-ion batteries.
- Source :
- Chinese Science Bulletin; Jun2014, Vol. 59 Issue 17, p2006-2011, 6p
- Publication Year :
- 2014
-
Abstract
- Urchin-like Sn-ZnO-C composite have been successfully prepared by thermal annealing of ZnSn(OH) precursor in acetylene/argon gas (1/9; v/v). The phase of the urchin-like Sn-ZnO-C has been characterized by X-ray diffraction (XRD) and Raman spectrum. The images of scanning electron microscopy (SEM) and transmission electron microscope (TEM) demonstrate that the Sn-ZnO-C composite with an average of 3 μm in diameter is composed of many core-shell nanowires and carbon nanotubes emanated from the center. The thermal annealing temperature and time have crucial effects on the formation of urchin-like structure and carbon content of the Sn-ZnO-C composites. As an anode for lithium-ion batteries, the urchin-like Sn-ZnO-C composite delivers a discharge capacity of 1,034.5 mAh/g in initial cycle and 571.9 mAh/g reversible discharge capacity after 25 cycles at a current density of 50 mA/g. The superior energy storage properties highlight the urchin-like Sn-ZnO-C composite as a potential alternative anode material in lithium-ion batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10016538
- Volume :
- 59
- Issue :
- 17
- Database :
- Complementary Index
- Journal :
- Chinese Science Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 96032679
- Full Text :
- https://doi.org/10.1007/s11434-014-0278-6