title: Electrodeposition of porous graphene networks on nickel foams as supercapacitor electrodes with high capacitance and remarkable cyclic stability.
abstract: We describe a facile, low-cost, and green method to fabricate porous graphene networks/nickel foam (PG/NF) electrodes by electrochemical deposition of graphene sheets on nickel foams (NFs) for the application of supercapacitor electrodes. The electrodeposition process was accomplished by electrochemical reduction of graphene oxide (GO) in its aqueous suspension. The resultant binder-free PG/NF electrodes exhibited excellent double-layer capacitive performance with a high rate capability and a high specific capacitance of 183.2 mF cm(-2) at the current density of 1 mA cm(-2). Moreover, the specific capacitance maintains nearly 100% over 10,000 charge-discharge cycles, demonstrating a remarkable cyclic stability of these porous supercapacitor electrodes.
  82.47.Uv (Electrochemical capacitors); 82.45.Fk (Electrodes electrochemistry); 81.05.Rm (Fabrication of porous materials).
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, and Department of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China, shorlin@mail.ustc.edu.cn.
authors.forename: Shaolin
authors.initials: S
authors.lastname: Yang
authors.forename: Bingchen
authors.initials: B
authors.lastname: Deng
authors.forename: Ruijing
authors.initials: R
authors.lastname: Ge
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Hong
authors.initials: H
authors.lastname: Wang
authors.forename: Zihan
authors.initials: Z
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhu
authors.forename: Guanzhong
authors.initials: G
authors.lastname: Wang