Supercapacitors based on microporous β-Ni(OH)2 nanorods
Publication Type:Journal Article
Source:Colloids and Surfaces A: Physicochemical and Engineering Aspects, Elsevier, Volume 457, Number 1, p.462-468 (2014)
Keywords:Aqueous precipitation, aqueous solution, article, Capacitance, Carbon, Charging/discharging, Cycling performance, Density, electrochemical analysis, electrode, Electrodes, electrolyte, Electrolytic capacitors, energy, Fast response time, film, Microporosity, nanofabrication, nanorod, Nanorods, Nanostructures, Nickel, nickel hydroxide, Nickel hydroxides, powder, Power densities, precipitation, priority journal, reaction time, Super capacitor, surface property, surfactant, Surfactant-free, synthesis, unclassified drug
A peculiar architecture of a novel class one dimensional β-Ni(OH)2 nanorods synthesized by an optimized surfactant-free aqueous precipitation route has been lucratively exploited to fabricate highly efficient microporous electrodes for supercapacitors. These fabricated electrodes comprised of a highly porous overlay of interconnected nanoscale units with rod-shaped profile which terminates into jagged-like morphology. The surface area of these nanorods was found to be 91m2g-1. This architecture transcribes into a superior cycling performance (capacitance of 1150Fg-1 was achieved) with more than 99% of the initial capacitance being retained after 5000 charging/discharging cycles. Their outstanding intercalation/de-intercalation prerogatives have also been exploited to fabricate supercapacitor coin cells which reveal a significant power density of 52kWkg-1 and energy density of 4Whkg-1 with extremely fast response time of 1.2ms. © 2014 Elsevier B.V.
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Cite this Research Publication
V. Lakshmi, Ranjusha, R., Vineeth, S., Balakrishnan, A., and Shantikumar V Nair, “Supercapacitors based on microporous β-Ni(OH)2 nanorods”, Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol. 457, pp. 462-468, 2014.