title: Preparation of novel three-dimensional NiO/ultrathin derived graphene hybrid for supercapacitor applications.
abstract: A new type of three-dimensional (3D) NiO/ultrathin derived graphene (UDG) hybrid on commercial Ni foam (NF) for a binder-free pseudocapacitor electrode is presented. NiO nanoflakes are in situ grown by a chemical bath deposition (CBD) technique on the free-standing 3D UDG/NF scaffold, which is first prepared by a simple nanocasting process consisting of hydrothermal reaction and subsequent thermal transformation. The 3D UDG/NF scaffold with interconnected network affords a high conductivity due to the high graphitization degree and efficiently facilitates the electron transport to NiO. Moreover, the 3D NiO/UDG/NF hybrid allows for a thinner 3D active material layer under the same loading density, which could shorten the diffusion paths of ions. The NiO/UDG/NF hybrid is directly used as a binder-free supercapacitor electrode, which exhibited significantly improved supercapacitor performance compared to the bare CBD prepared NiO/NF electrode.
authors.affiliation: The College of Materials Science and Engineering, Beijing University of Technology , Beijing 100124, P.R. China.
authors.forename: Chunhui
authors.initials: C
authors.lastname: Wu
authors.forename: Sixu
authors.initials: S
authors.lastname: Deng
authors.forename: Hao
authors.initials: H
authors.lastname: Wang
authors.forename: Yuxiu
authors.initials: Y
authors.lastname: Sun
authors.forename: Jingbing
authors.initials: J
authors.lastname: Liu
authors.forename: Hui
authors.initials: H
authors.lastname: Yan