Journal
APPLIED PHYSICS LETTERS
Volume 92, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2937839
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The single-walled carbon nanotube (SWNT)/SnO2 core-shell structures with small diameters as Li-insertion materials are investigated. The initial discharge capacity is up to 1339 mA h/g, and the reversible capacity retention is 89.8% after 100 cycles, which is comparable to the performance of commercial graphite anodes. Such good electrochemical properties are attributed to large surface-to-volume ratio of SnO2 and good electrical conductivity of SWNT. Our results demonstrate that the SWNT/core-shell structures are very promising for active Li-insertion materials for Li-ion batteries. (c) 2008 American Institute of Physics.
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