Silicon-Carbon Nanotube Coaxial Sponge as Li-Ion Anodes with High Areal Capacity

Liangbing Hu, Hui Wu, Yifan Gao, Anyuan Cao, Hongbian Li, James McDough, Xing Xie, Min Zhou, Yi Cui

Research output: Contribution to journalArticlepeer-review

201 Scopus citations

Abstract

Highly porous, conductive Si-CNT sponge-like structures with a large areal mass loading are demonstrated as effective Li-ion battery anode materials. Nano-pore formation and growth in the Si shell has been identified as the primary failure mode of the Si-CNT sponge anode, and the formation of such nanopores can be minimized by tuning the cutoff voltages. In conjunction with experiments, a theoretical analysis was carried out to explain the pore formation mechanism. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish (US)
Pages (from-to)523-527
Number of pages5
JournalAdvanced Energy Materials
Volume1
Issue number4
DOIs
StatePublished - Jul 15 2011
Externally publishedYes

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