title: Nickel-cobalt hydroxide nanosheets coated on NiCo2O4 nanowires grown on carbon fiber paper for high-performance pseudocapacitors.
abstract: A series of flexible nanocomposite electrodes were fabricated by facile electro-deposition of cobalt and nickel double hydroxide (DH) nanosheets on porous NiCo2O4 nanowires grown radially on carbon fiber paper (CFP) for high capacity, high energy, and power density supercapacitors. Among different stoichiometries of CoxNi1-xDH nanosheets studied, Co0.67Ni0.33 DHs/NiCo2O4/CFP hybrid nanoarchitecture showed the best cycling stability while maintaining high capacitance of ∼1.64 F/cm(2) at 2 mA/cm(2). This hybrid composite electrode also exhibited excellent rate capability; the areal capacitance decreased less than 33% as the current density was increased from 2 to 90 mA/cm(2), offering excellent specific energy density (∼33 Wh/kg) and power density (∼41.25 kW/kg) at high cycling rates (up to150 mA/cm(2)).
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , 771 Ferst Drive, Atlanta, Georgia 30332-0245, United States.
authors.forename: Liang
authors.initials: L
authors.lastname: Huang
authors.forename: Dongchang
authors.initials: D
authors.lastname: Chen
authors.forename: Yong
authors.initials: Y
authors.lastname: Ding
authors.forename: Shi
authors.initials: S
authors.lastname: Feng
authors.forename: Zhong Lin
authors.initials: ZL
authors.lastname: Wang
authors.forename: Meilin
authors.initials: M
authors.lastname: Liu