title: Hierarchical Configuration of NiCo₂S₄ Nanotube@Ni-Mn Layered Double Hydroxide Arrays/Three-Dimensional Graphene Sponge as Electrode Materials for High-Capacitance Supercapacitors.
abstract: Three dimensional (3D) hierarchical network configurations are composed of NiCo2S4 nanotube @Ni-Mn layered double hydroxide (LDH) arrays in situ grown on graphene sponge. The 3D graphene sponge with robust hierarchical porosity suitable for as a basal growth has been obtained from a colloidal dispersion of graphene oxide using a simple directional freeze-drying technique. The high conductive NiCo2S4 nanotube arrays grown on 3D graphene shows excellent pseudocapacity and good conductive support for high-performance Ni-Mn LDH. The 3D NiCo2S4@Ni-Mn LDH/GS shows a high specific capacitance (Csp) 1740 mF cm(-2) at 1 mA cm(-2), even at 10 mA cm(-2), 1267.9 mF cm(-2) maintained. This high-performance composite electrode proposes a new and feasible general pathway as 3D electrode configuration for energy storage devices.
authors.affiliation: †School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.|‡Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan 430062, China.
authors.forename: Houzhao
authors.initials: H
authors.lastname: Wan
authors.affiliation: †School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Liu
authors.affiliation: †School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Yunjun
authors.initials: Y
authors.lastname: Ruan
authors.affiliation: †School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Lv
authors.affiliation: †School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Peng
authors.affiliation: †School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Ji
authors.affiliation: †School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Miao
authors.affiliation: †School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Jiang
keywords: NiCo2S4; graphene; nanotube array; supercapaitor; three-dimensional