title: Liquid-phase epitaxial growth of two-dimensional semiconductor hetero-nanostructures.
abstract: Although many two-dimensional (2D) hybrid nanostructures are being prepared, the engineering of epitaxial 2D semiconductor hetero-nanostructures in the liquid phase still remains a challenge. The preparation of 2D semiconductor hetero-nanostructures by epitaxial growth of metal sulfide nanocrystals, including CuS, ZnS and Ni3S2, is achieved on ultrathin TiS2 nanosheets by a simple electrochemical approach by using the TiS2 crystal and metal foils. Ultrathin CuS nanoplates that are 50-120 nm in size and have a triangular/hexagonal shape are epitaxially grown on TiS2 nanosheets with perfect epitaxial alignment. ZnS and Ni3S2 nanoplates can be also epitaxially grown on TiS2 nanosheets. As a proof-of-concept application, the obtained 2D CuS-TiS2 composite is used as the anode in a lithium ion battery, which exhibits a high capacity and excellent cycling stability.
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore) http://www.ntu.edu.sg/home/hzhang/
authors.forename: Chaoliang
authors.initials: C
authors.lastname: Tan
authors.forename: Zhiyuan
authors.initials: Z
authors.lastname: Zeng
authors.forename: Xiao
authors.initials: X
authors.lastname: Huang
authors.forename: Xianhong
authors.initials: X
authors.lastname: Rui
authors.forename: Xue-Jun
authors.initials: XJ
authors.lastname: Wu
authors.forename: Bing
authors.initials: B
authors.lastname: Li
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Luo
authors.forename: Junze
authors.initials: J
authors.lastname: Chen
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.forename: Qingyu
authors.initials: Q
authors.lastname: Yan
authors.forename: Hua
authors.initials: H
authors.lastname: Zhang
keywords: CuS nanoplates; TiS2 nanosheets; epitaxial growth; hetero-nanostructures