title: Graphene sheet/porous NiO hybrid film for supercapacitor applications.
abstract: We report the preparation of a nickel-foam-supported graphene sheet/porous NiO hybrid film by the combination of electrophoretic deposition and chemical-bath deposition. The obtained graphene-sheet film of about 19 layers was used as the nanoscale substrate for the formation of a highly porous NiO film made up of interconnected NiO flakes with a thickness of 10-20 nm. The graphene sheet/porous NiO hybrid film exhibits excellent pseudocapacitive behavior with pseudocapacitances of 400 and 324 F g(-1) at 2 and 40 A g(-1), respectively, which is higher than those of the porous NiO film (279 and 188 F g(-1) at 2 and 40 A g(-1)). The enhancement of the pseudocapacitive properties is due to reinforcement of the electrochemical activity of the graphene-sheet film.
authors.affiliation: State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, PR China.
authors.forename: Xinhui
authors.initials: X
authors.lastname: Xia
authors.forename: Jiangping
authors.initials: J
authors.lastname: Tu
authors.forename: Yongjin
authors.initials: Y
authors.lastname: Mai
authors.forename: Rong
authors.initials: R
authors.lastname: Chen
authors.forename: Xiuli
authors.initials: X
authors.lastname: Wang
authors.forename: Changdong
authors.initials: C
authors.lastname: Gu
authors.forename: Xinbing
authors.initials: X
authors.lastname: Zhao