Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Change of the Efficiency in All-Vanadium Redox Flow Battery with Current Density

전류밀도에 따른 바나듐 레독스 흐름 전지의 효율 변화

  • CHOI, HO-SANG (Department of Chemical Engineering, Kyungil University) ;
  • IN, DAE-MIN (Department of Green Energy Engineering, Hoseo University Graduate School) ;
  • SONG, YOUNG-JOON (Department of Green Energy Engineering, Hoseo University Graduate School) ;
  • RYU, CHEOL-HWI (Department of Green Energy Engineering, Hoseo University Graduate School) ;
  • HWANG, GAB-JIN (Department of Green Energy Engineering, Hoseo University Graduate School)
  • 최호상 (경일대학교 화학공학과) ;
  • 인대민 (호서대학교 일반대학원 그린에너지공학과) ;
  • 송영준 (호서대학교 일반대학원 그린에너지공학과) ;
  • 유철휘 (호서대학교 일반대학원 그린에너지공학과) ;
  • 황갑진 (호서대학교 일반대학원 그린에너지공학과)
  • Received : 2017.09.20
  • Accepted : 2017.10.30
  • Published : 2017.10.30
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Abstract

The performance of all-vanadium redox flow battery (VRFB) was tested with an increase of the current density. APS membrane (anion exchange membrane) and GF050CH (cabon felt) were used as a separator and electrode, respectively. An average energy efficiency of the VRFB was 79.5%, 68.1%, and 62.8% for the current density of $60mA/cm^2$, $120mA/cm^2$, and $160mA/cm^2$, respectively. It was confirmed that VRFB can be used as a energy storage system at the higher current density even if the energy efficiency was deceased about 21%.

Keywords

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