title: Silicon nanotube battery anodes.
abstract: 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.
authors.affiliation: School of Energy Engineering, Ulsan National Institute of Science & Technology, Ulsan, Korea 689-798, Beamline Research Division, Pohang Accelerator Laboratory, Pohang, Korea.
authors.forename: Mi-Hee
authors.initials: MH
authors.lastname: Park
authors.forename: Min Gyu
authors.initials: MG
authors.lastname: Kim
authors.forename: Jaebum
authors.initials: J
authors.lastname: Joo
authors.forename: Kitae
authors.initials: K
authors.lastname: Kim
authors.forename: Jeyoung
authors.initials: J
authors.lastname: Kim
authors.forename: Soonho
authors.initials: S
authors.lastname: Ahn
authors.forename: Yi
authors.initials: Y
authors.lastname: Cui
authors.forename: Jaephil
authors.initials: J
authors.lastname: Cho