Hydrothermally synthesized nickel cobalt oxide for bifunctional electrochemical supercapacitor and nonenzymatic glucose biosensor

High performance porous nickel cobalt oxide nanowires for asymmetric supercapacitor

nt matter & 2013 0.1016/j.nanoen.2 thor. Tel.: (65)-67 [email protected] (P Abstract In this work, we present the formation of porous NiCo oxide nanowires from single crystal nickel cobalt bimetallic carbonate hydroxide nanowires (NiCo cNW) for supercapacitor applications. High aspect ratio NiCo cNWs are found to evolve from highly crystalline nickel cobalt layered double hydroxides through a dode...

Reduced Graphene Oxide on Nickel Foam for Supercapacitor Electrodes

The focus of this paper is the investigation of reduced graphene oxide (GO)/nickel foam (RGON) samples for use as supercapacitor electrodes. Nickel foam samples were soaked in a GO suspension and dried before being subjected to two different methods to remove oxygen. Atmospheric pressure annealed (APA) samples were treated with a varying number (10-18) of nitrogen plasma jet scans, where sample...

Mesoporous ZnS–NiS Nanocomposites for Nonenzymatic Electrochemical Glucose Sensors

Mesoporous ZnS-NiS composites are prepared via ion- exchange reactions using ZnS as the precursor. The prepared mesoporous ZnS-NiS composite materials have large surface areas (137.9 m(2) g(-1)) compared with the ZnS precursor. More importantly, the application of these mesoporous ZnS-NiS composites as nonenzymatic glucose sensors was successfully explored. Electrochemical sensors based on meso...

An Electrochemical Route for Making Porous Nickel Oxide Electrochemical Capacitors

Porous nickel oxide films were prepared by electrochemically precipitating nickel hydroxide and heating the hydroxide in air at 300°C. The resulting nickel oxide films behave as an electrochemical capacitor with a specific capacitance of 59 Flg electrode material. These nickel oxide films maintain high utilization at high rates of discharge (i.e., high power density) and have excellent cycle li...

Exchange Coupling at Cobalt/ Nickel Oxide Interfaces