Nickel-copper bimetallic particles dispersed into poly (ethylenedioxythiophene) as a novel electrocatalyst for electrochemical reduction of oxygen


Afsar M. C. , Karabiberoglu S. U. , Dursun Z.

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, cilt.261, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 261
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.mseb.2020.114656
  • Dergi Adı: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS

Özet

Electrochemical behaviour of oxygen was investigated at nickel-copper bimetallic particles covered into poly (ethylenedioxythiophene) modified glassy carbon electrode (Ni-Cu/PEDOT/GCE). The characterization tools which are energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electrochemical impedance spectroscopy (EIS) were used to identify the mor-phology and chemical structure of the modified electrode surfaces. The best catalytic effect regarding to peak potential and peak current for O-2 reduction were obtained with the Ni-Cu/PEDOT/GCE. The hydrodynamic studies have shown that the reduction of oxygen occurs via almost four electron transfer on the Ni-Cu/PEDOT/GCE.