Journal
CARBON
Volume 82, Issue -, Pages 282-287Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.10.072
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Funding
- MOE AcRF Tier2 Funding, Singapore [MOE2011-T2-1-137]
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We report a binder-free Li-ion battery anode based on a tin (Sn) coated vertical-aligned carbon nanotube (VACNT) array. In this anode, the VACNT array, acting as a robust core matrix to support high theoretical capacity active material Sn, offers large inter-wire spacing for Sn expansion during the lithiation/de-lithiation processes and forms direct conductive pathways for electrons transporting. A remarkable enhancement in the capacity retentions abilities of this anode compared with pure Sn film anode has been achieved. A reversible capacity as high as 900 mAh g(-1) over 400 cycles at 0.2 C and nearly 400 mAh g(-1) over 1000 cycles at 0.5 C has been demonstrated respectively. (C) 2014 Elsevier Ltd. All rights reserved.
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