title: Co(OH)2nanosheet-decorated graphene-CNT composite for supercapacitors of high energy density.
abstract: A composite of graphene and carbon nanotubes has been synthesized and characterized for application as supercapacitor electrodes. By coating the nanostructured active material of Co(OH)2onto one electrode, the asymmetric supercapacitor has exhibited a high specific capacitance of 310 F g-1, energy density of 172 Wh kg-1and maximum power density of 198 kW kg-1in ionic liquid electrolyte EMI-TFSI.
authors.affiliation: National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, 305-0047, Japan.
authors.forename: Qian
authors.initials: Q
authors.lastname: Cheng
authors.affiliation: National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, 305-0047, Japan; Doctoral Program in Materials Science and Engineering, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Japan.
authors.forename: Jie
authors.initials: J
authors.lastname: Tang
authors.affiliation: National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, 305-0047, Japan.
authors.forename: Norio
authors.initials: N
authors.lastname: Shinya
authors.affiliation: Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3255, USA.
authors.forename: Lu-Chang
authors.initials: LC
authors.lastname: Qin
keywords: Carbon nanotube; Cobalt hydroxide; Graphene; Supercapacitor