Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Study on the Coating Electrode for the Alkaline Water Electrolysis

알칼리 수전해용 코팅 전극에 관한 연구

  • MIN-JI KANG (Department of Green Energy Engineering, Hoseo University Graduate School) ;
  • CHEOL-HWI RYU (Department of Green Energy Engineering, Hoseo University Graduate School) ;
  • GAB-JIN HWANG (Department of Green Energy Engineering, Hoseo University Graduate School)
  • 강민지 (호서대학교 일반대학원 그린에너지공학과) ;
  • 유철휘 (호서대학교 일반대학원 그린에너지공학과) ;
  • 황갑진 (호서대학교 일반대학원 그린에너지공학과)
  • Received : 2023.08.07
  • Accepted : 2023.11.21
  • Published : 2023.12.30
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Abstract

An electrode was prepared by dip-coating NiFe2O4 powder on stainless steel (SUS) support for the application in the alkaline water electrolysis. The prepared electrode was analyzed using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDXS), and was evaluated for the voltage properties with the change of current density in oxygen evolution reaction (OER) and hydrgen evolution reaction (HER) using 1, 3 and 7 M KOH solution. From the SEM and EDXS analysis, it was confirmed that the prepared electrode had NiFe2O4 on the SUS support. In OER and HER, the voltage in the 7 M KOH solution had a value of 1.35 and -1.90 V at 0.2 and -0.2 A/cm2 of the current density, respectively. It was considered that the prepared electrode could be use as an electrode in the alkaline water electrolysis from the experimental results.

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References

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