Effect of different electrolytes and deposition time on the supercapacitor properties of nanoflake-like Co(OH) 2 electrodes.

Autor: Maile NC; Holography and Materials Research Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, M.S., India., Shinde SK; Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Ilsan, Biomedical Campus, Goyang-si, Gyeonggi-do 10326, South Korea., Koli RR; Holography and Materials Research Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, M.S., India., Fulari AV; Department of Physics, Osmania University, Hyderabad, India., Kim DY; Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Ilsan, Biomedical Campus, Goyang-si, Gyeonggi-do 10326, South Korea. Electronic address: sbpkim@dongguk.edu., Fulari VJ; Holography and Materials Research Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, M.S., India. Electronic address: vijayfulari@gmail.com.
Jazyk: angličtina
Zdroj: Ultrasonics sonochemistry [Ultrason Sonochem] 2019 Mar; Vol. 51, pp. 49-57. Date of Electronic Publication: 2018 Sep 07.
DOI: 10.1016/j.ultsonch.2018.09.003
Abstrakt: The effect of ultrasonic treatment and deposition time on nanoflake-like Co(OH) 2 thin films were prepared using the potentiostatic mode of electrodeposition method on stainless steel substrates by a nitrate reduction reaction. After ultrasonic treatment, we used stainless steel substrates for deposition of the nanoflakes like Co(OH) 2 thin films. The effect of deposition times and electrolytes on different physico-chemical properties of Co(OH) 2 was investigated in detail, such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS), and electrochemical testing. After ultrasonic treatment Co(OH) 2 thin films had devolvement of the uniform and interconnected formation of nanoflakes nanostructures. Supercapacitor performance of the Co(OH) 2 electrodes suggest that, specific capacitance are depends on the surface morphology, and Co(OH) 2 electrodes after ultrasonic treatment exhibited higher performance than without ultrasonication. The maximum specific capacitance of the 30 min. deposited Co(OH) 2 nanoflakes exceeded 276 Fg -1 in 0.5M KOH electrolyte at 5 mVs -1 scan rate.
(Copyright © 2018 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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