Journal
NANO LETTERS
Volume 9, Issue 11, Pages 3844-3847Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl902058c
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Funding
- National Research Foundation (NRF)
- Ministry of Education, Science and Technology (MEST) of Korea
- National Research Foundation of Korea [과C6A2605, R31-2008-000-20012-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We present Si nanotubes prepared by reductive decomposition of a silicon precursor in an alumina template and etching. These nanotubes show impressive results, which shows very high reversible charge capacity of 3247 mA h/g with Coulombic efficiency of 89%, and also demonstrate superior capacity retention even at 5C rate (=15 A/g). Furthermore, the capacity in a Li-ion full cell consisting of a cathode of LiCoO2 and anode of Si nanotubes demonstrates a 10 times higher capacity than commercially available graphite even after 200 cycles.
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