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Evaluation of Electrodes Composed of Europium Tungstate/Reduced Graphene Oxide Nanocomposite for Use As Supercapacitors Publisher



Naderi HR1 ; Nadri P2 ; Sorouri AM3 ; Ganjali MR1, 4 ; Ehrlich H5, 6 ; Rahiminasrabadi M5, 7, 8 ; Ahmadi F9, 10
Authors
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Authors Affiliations
  1. 1. Center of Excellence in Electrochemistry, University of Tehran, Tehran, 1958739196, Iran
  2. 2. School of Medicine, Mazandaran University of Medical Sciences, Babol, Iran
  3. 3. Faculty of Veterinary Science, Islamic Azad University, Science & Research Branch-Tehran, Iran
  4. 4. Biosensor Research Centre, Endocrinology & Metabolism Molecular and Cellular Research Institute, Tehran University of Medical Sciences, Tehran, 19839-69411, Iran
  5. 5. Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Freiberg, 09599, Germany
  6. 6. Center for Advanced Technology, Adam Mickiewicz University, Poznan, 61614, Poland
  7. 7. Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, 1951683759, Iran
  8. 8. Faculty of Pharmacy, Baqiyatallah University of Medical Sciences, Tehran, 1951683759, Iran
  9. 9. Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran
  10. 10. Medicinal Chemistry, School of Pharmacy-International Campus, Iran University of Medical Sciences, Tehran, Iran

Source: Surfaces and Interfaces Published:2022


Abstract

For the first time, Eu2(WO4)3 nanoparticles (EWNPs) were fabricated and anchored on reduced graphene oxide (RGO) through a sonochemical procedure. The supercapacitive behavior of the product, namely EWNP/RGO was studied using galvanostatic charge-discharge (GCD), cyclic voltammetry (CV) and impedance spectroscopy (ES). Nanostructured EWNP-RGO had a specific capacitance of 462 Fg−1 in a 2.0 M H2SO4 solution at 2 mVs−1, and of 423 Fg−1 in GCD tests at 1 Ag−1, which was attributed to the synergy of the EWNPs and the RGO sheets, the considerable charge mobility, as well as the flexibility of RGO sheets. EWNP/RGO electrodes were found to have 104.2% of their initial specific capacitance after 4000 cycles. Based on the results the EWNP/RGO nanocomposites was regarded as a composite with suitable functional performance for energy storage applications. © 2022 Elsevier B.V.
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