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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Hydrogen Production Technology using High Temperature Electrolysis

고온 수전해에 의한 수소 제조 기술

  • Hong, Hyun Seon (Plant Engineering Center, Institute for Advanced Engineering (IAE)) ;
  • Choo, Soo-Tae (Plant Engineering Center, Institute for Advanced Engineering (IAE)) ;
  • Yun, Yongseung (Plant Engineering Center, Institute for Advanced Engineering (IAE))
  • 홍현선 (고등기술연구원 플랜트 엔지니어링 센터) ;
  • 추수태 (고등기술연구원 플랜트 엔지니어링 센터) ;
  • 윤용승 (고등기술연구원 플랜트 엔지니어링 센터)
  • Published : 2003.12.30
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Abstract

High temperature electrolysis (HTE) can become a key target technology for fulfilling the hydrogen requirement for the future hydrogen economy. This technology is based upon the partial replacement of electricity with heat energy for the electrolysis. Although the current research status of high temperature electrolysis in many countries remains at the small laboratory scale, the technology has great potential for producing hydrogen at a higher efficiency than low-temperature electrolysis (LTE). The efficiency of LTE is not expected to rise above 40%, whereas the efficiency of HTE has been reported to be above 50%. The higher efficiency of HTE would reduce costs by more than 30% compared to LTE. In this study, the technical data regarding the HTE of water and the resulting hydrogen production are reviewed, with an emphasis on the application of high temperature solid electrolyte and oxide electrodes for the HTE process.

Keywords

Acknowledgement

Supported by : 수소에너지사업단

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