Synthesis of Ytterbium Tungstate with Excellent Pseudocapacitive Behavior and a High Cycling Stability Material for Supercapacitors

Authors

  • Ali Sobhani-Nasab Social Determinants of Health (SDH) Research Center, Kashan University of Medical Sciences, Kashan, Iran|Core Research Lab, Kashan University of Medical Sciences, Kashan, Iran
  • Ebrahim Naghian Department of Chemistry, South Tehran Branch Islamic Azad University, Tehran, Iran
  • Esmail Sohouli Young Researchers and Elite Club, Science and Research Branch, Islamic Azad University, Tehran, Iran
  • Hamid Reza Naderi Novin Ebtekar Company, Exclusive Agent of Metrohm-Autolab and Dropsens Companies, Tehran, Iran
  • Kourosh Adib Department of Chemistry, Imam Hossein University, Tehran, Iran
Abstract:

Nanoparticles of ytterbium tungstate prepared through the direct addition of an Yb3+ solution to a tungstate solution, were computed through Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS). Further the supercapacitive characteristics of the nanoparticles, as a potential material for constructing electrodes, were evaluated through cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) and electrochemical impedance spectroscopy (EIS). Electrodes made of the Yb2(WO4)3 had a specific capacitance (SC) value of 336 F g-1 in a 2.0 M H2SO4 solution at a potential scan rate of 2 mV s-1; and 298 F g-1 at a current density of 1 A g-1 based on GCD tests. The electrodes also revealed to have a 95.8% cycling durability after 4000 potential cycles.

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Journal title

volume 12  issue 2

pages  263- 276

publication date 2020-02-01

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