title: Hierarchical NiO Nanoflake Arrays on Nickel Foam as a Supercapacitor Electrode with High Capacitance and High Rate Capability.
abstract: In this paper, we report a simple and cost-effective method for fabricating hierarchical NiO nanoflake arrays on nickel foam. X-ray diffraction, scanning electron microscope and transmission electron microscope are employed to study the morphology and structure of the as-synthesized NiO materials. Galvanostatic charge/discharge measurements demonstrate that the hierarchical NiO nanocomposite displays excellent capacitive behavior between the potential range of -0.1-0.5 V, and a maximum specific capacitance as high as 823 F g-1 can be achieved at a charge/discharge current density of 4 A g-1, and it only decreases by 20% when the current density increases to 12 A g-1. The remarkable electrochemical performance of this hierarchical NiO nanocomposite indicates the areat application potential in supercapacitors.
authors.forename: Guangwu
authors.initials: G
authors.lastname: Yang
authors.forename: Bing
authors.initials: B
authors.lastname: He
authors.forename: Wenyue
authors.initials: W
authors.lastname: Guo
authors.forename: Lianming
authors.initials: L
authors.lastname: Zhao
authors.forename: Qingzhong
authors.initials: Q
authors.lastname: Xue
authors.forename: Hulin
authors.initials: H
authors.lastname: Li