title: Formation of CoS2Nanobubble Hollow Prisms for Highly Reversible Lithium Storage.
abstract: Metal-organic frameworks (MOFs) have been intensively used as the templates/precursors to synthesize complex hollow structures for various energy-related applications. Herein we report a facile two-step diffusion-controlled strategy to generate novel MOFs derived hierarchical hollow prisms composed of Nanosized CoS2bubble-like subunits. Uniform zeolitic imidazolate framework-67 (ZIF-67) hollow prisms assembled by interconnected nanopolyhedra are first synthesized via a transformation process. Afterwards, these ZIF-67 building blocks are converted into CoS2bubble-like hollow particles to form the complex hollow prisms through a sulfidation reaction with an additional annealing treatment. When evaluated as an electrode material for lithium-ion batteries, the as-obtained CoS2nanobubble hollow prisms show remarkable electrochemical performance with good rate capability and long cycle life.
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
authors.forename: Le
authors.initials: L
authors.lastname: Yu
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
authors.forename: Jing Fan
authors.initials: JF
authors.lastname: Yang
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore. xwlou@ntu.edu.sg, davidlou88@gmail.com.
authors.forename: Xiong Wen David
authors.initials: XW
authors.lastname: Lou
keywords: CoS2; ZIF-67; hollow prisms; lithium-ion batteries