Electrochemical Oxidation of Carbon Felt for Redox Flow Battery

Redox flow battery용 carbon felt 전극의 전기화학적 산화

  • Jung, Young-Guan (Dep. Mechanical Engineering, Kumoh National Institute of Technology) ;
  • Hwang, Gab-Jin (Graduate School, Dep. Green Energy, Hoseo University) ;
  • Kim, Jae-Chul (Graduate School, Dep. Green Energy, Hoseo University) ;
  • Ryu, Cheol-Hwi (Graduate School, Dep. Green Energy, Hoseo University)
  • 정영관 (금오공과대학교 기계공학과) ;
  • 황갑진 (호서대학교 일반대학원 그린에너지공학과) ;
  • 김재철 (호서대학교 일반대학원 그린에너지공학과) ;
  • 유철휘 (호서대학교 일반대학원 그린에너지공학과)
  • Received : 2011.09.28
  • Accepted : 2011.10.21
  • Published : 2011.10.30


All vanadium redox-flow battery (VRFB) has been studied actively as one of the most promising electrochemical energy storage systems for a wide rage of applications such as electric vehicles, photovoltaic arrays, and excess power generated by electric power plants at night time. In this study, carbon felt electrodes were treated by electrochemical oxidation with KOH, and the cyclic voltammetry were studied in order to investigate redox reactivity of vanadium ion species with carbon felt electrodes. Besides the effect of electrochemical oxidation on the surface chemistry of carbon felt electrodes were investigated using the X-ray photoelectron spectroscopy (XPS). After electrochemical oxidation, XPS analysis of PAN based GF20-3 carbon felt electrode revealed on increase in the overall surface oxygen content of the carbon felts after electrochemical oxidation. Redox reaction characteristics using cyclic voltammetry (CV) were ascertained that the electrochemical treated electrode were more reversible than the untreated electrode.


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