Publication Type:

Journal Article

Source:

Chemical Engineering Journal, Volume 220, p.360-366 (2013)

URL:

http://www.scopus.com/inward/record.url?eid=2-s2.0-84874381771&partnerID=40&md5=82193a43a50d4be8b008e14c3528f660

Keywords:

Adsorption/desorption, atomic force microscopy, Average diameter, BET analysis, Capacitance, Capacitive behavior, Cyclic voltammetry, Electrodes, Electrolytic capacitors, Electron diffraction, Electronic materials, energy, Growth directions, High purity, Hydrothermal routes, Materials processing, Nanostructures, Nanowires, Nickel oxide, Nio nanowires, Porous thin films, Selected area electron diffraction, Stability, Structural stabilities, Super capacitor, Supercapacitor application, Surface area, Thin films, Thin layers, Thin-film coatings, Titanium foils, transmission electron microscopy, Transmission electron microscopy (TEM), X ray diffraction, XRD analysis

Abstract:

Nanowires of NiO were successfully synthesized using a simple hydrothermal route. The nanowires were characterized for phase composition and morphology by X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques, respectively. XRD analysis showed that the powders produced were of high purity cubic NiO phase. Selected area electron diffraction (SAED) analysis during TEM showed the growth direction of NiO nanowires in (100), while exhibiting an average diameter of ∼ 65nm. BET analysis showed these nanowires exhibiting a surface area of 153.2m2/g. These nanowires were electrophoretically deposited on titanium foils as thin layer (∼5μm thickness) and were studied for their capacitive behavior as electrodes for supercapacitor applications. Image analysis and atomic force microscopy (AFM) studies revealed the thin film coating to be highly porous (>50%). Cyclic voltammetry (CV) studies on these electrodes exhibited a specific mass capacitance of 750F/g with 12% capacitance fade at the end of 1000 cycles. The present study elucidates how NiO surface morphology and OH- adsorption/desorption behaviors underlying these electrodes impact the chemical and structural stability performance. © 2013 Elsevier B.V.

Notes:

cited By 22

Cite this Research Publication

, “Chemical and structural stability of porous thin film NiO nanowire based electrodes for supercapacitors”, Chemical Engineering Journal, vol. 220, pp. 360-366, 2013.

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