title: Structural characterization of titanate nanotubes for lithium storage.
abstract: Titanate nanotubes were synthesized by hydrothermal method using various TiO2 precursors as starting materials. The electrochemical properties were investigated by cyclic voltammetric methods. The microstructure and morphology of the synthesized powders were characterized by XRD, TEM. Titanate nanotubes composed of H2Ti2O5 x H2O with outer and inner diameter of approximately 10 nm and 6 nm, and the interlayer spacing was about 0.65 approximately 0.74 nm. Also, the titanate nanotubes showed a discharge capacity of 303 mAh/g and the highest cycle stability because of the open-end and rolled layers with suitable spacing. The relationships between morphology and electrochemical properties have been also discussed.
authors.affiliation: Division of Materials Science and Engineering, Hanyang University, Seoul 133-791, Korea.
authors.forename: Dong Hyun
authors.initials: DH
authors.lastname: Kim
authors.forename: Ji Hoon
authors.initials: JH
authors.lastname: Yoon
authors.forename: Ki Soo
authors.initials: KS
authors.lastname: Lee
authors.forename: Yi-Hun
authors.initials: YH
authors.lastname: Jung
authors.forename: Bo Ra
authors.initials: BR
authors.lastname: Lee
authors.forename: Jum Suk
authors.initials: JS
authors.lastname: Jang
authors.forename: Duck-Kyun
authors.initials: DK
authors.lastname: Choi
authors.forename: Sun-Jae
authors.initials: SJ
authors.lastname: Kim
authors.forename: Yang Kook
authors.initials: YK
authors.lastname: Sun
authors.forename: Kyung Sub
authors.initials: KS
authors.lastname: Lee