title: Solution growth of NiO nanosheets supported on Ni foam as high-performance electrodes for supercapacitors.
abstract: Well-aligned nickel oxide (NiO) nanosheets with the thickness of a few nanometers supported on a flexible substrate (Ni foam) have been fabricated by a hydrothermal approach together with a post-annealing treatment. The three-dimensional NiO nanosheets were further used as electrode materials to fabricate supercapacitors, with high specific capacitance of 943.5, 791.2, 613.5, 480, and 457.5 F g(-1) at current densities of 5, 10, 15, 20, and 25 A g(-1), respectively. The NiO nanosheets combined well with the substrate. When the electrode material was bended, it can still retain 91.1% of the initial capacitance after 1,200 charging/discharging cycles. Compared with Co3O4 and NiO nanostructures, the specific capacitance of NiO nanosheets is much better. These characteristics suggest that NiO nanosheet electrodes are promising for energy storage application with high power demands.
authors.affiliation: School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China ; Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, People's Republic of China.
authors.forename: Hailong
authors.initials: H
authors.lastname: Yan
authors.affiliation: School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China ; Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, People's Republic of China.
authors.forename: Deyang
authors.initials: D
authors.lastname: Zhang
authors.affiliation: School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China ; Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, People's Republic of China.
authors.forename: Jinyou
authors.initials: J
authors.lastname: Xu
authors.affiliation: School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China ; Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Lu
authors.affiliation: Department of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, People's Republic of China.
authors.forename: Yunxin
authors.initials: Y
authors.lastname: Liu
authors.affiliation: School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China ; Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, People's Republic of China.
authors.forename: Kangwen
authors.initials: K
authors.lastname: Qiu
authors.affiliation: School of Materials Science and Technology, China University of Geosciences, Beijing 100083, People's Republic of China.
authors.forename: Yihe
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, People's Republic of China ; Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, People's Republic of China.
authors.forename: Yongsong
authors.initials: Y
authors.lastname: Luo
keywords: Flexible supercapacitors; Hydrothermal approach; Long cycle life; NiO nanosheets