پديدآورندگان :
Mousavihashemi Seyedabolfazl Electrochemistry Research Laboratory, Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran , Hosseini Mir Ghasem mg-hosseini@tabrizu.ac.ir Electrochemistry Research Laboratory, Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran,
كليدواژه :
Vanadium redox flow batteries , energy storage devices , graphite felt electrodes Electrospining of graphene oxide
چكيده فارسي :
Vanadium redox flow batteries (VRFBs) have attracted much attention as next-generation large-scale energy storage devices [1]. However, the graphite felt electrodes suffer from a drop in the energy efficiency induced by the large activation polarization during vanadium redox reactions[2]. In this work, we prepared graphene oxide modified carbon felt electrodes. Electrospining of graphene oxide suspension was used to cover carbon felt fibers with graphene oxide nano-sheet [2]. Morphology of as-prepared electrodes were studied by SEM. XRD patterns were used to investigate the presence of graphene oxide nano sheets. Cyclic voltammetry and electrochemical impedance spectroscopy technics were used to investigate electrochemical behavior of graphene oxide modified electrode towards vanadium redox couples reaction. Graphene oxide modified electrode showed outstanding performance for this purpose and cycling stability was of reliable [3].
