Journal
SCIENCE CHINA-CHEMISTRY
Volume 55, Issue 7, Pages 1314-1318Publisher
SCIENCE PRESS
DOI: 10.1007/s11426-012-4659-x
Keywords
tin dioxide; hollow spheres; nanoparticles; lithium-ion batteries; anode materials
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Funding
- National Natural Science Foundation of China [21121063]
- National Key Project on Basic Research [2011CB935700, 2009CB930400]
- Chinese Academy of Sciences
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SnO2 hollow spheres have been synthesized via a facile hydrothermal method using sulfonated polystyrene beads as a template followed by a calcination process in air. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy show that the as-obtained SnO2 hollow spheres have a wall thickness of about 50 nm, and consist of nanosized SnO2 particles with a mean diameter of about 15 nm. Electrochemical measurements indicate that the SnO2 hollow spheres exhibit improved electrochemical performance in terms of specific capacity and rate capability in comparison with commercial SnO2 when used as anode materials for lithium-ion batteries. The enhanced performance may be attributed to the spherical and hollow structure, as well as the building blocks of SnO2 nanoparticles.
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