Long-Term Performance of Lab-Scale High Temperature Electrolysis(HTE) System for Hydrogen Production

Lab-scale 고온전기분해 수소생산시스템의 장기운전 성능평가

  • Received : 2010.09.14
  • Accepted : 2011.10.21
  • Published : 2011.10.30


KEPRI (KEPCO Research Institute) designed and operated the lab-scale high temperature electrolysis (HTE) system for hydrogen production with $10{\times}10cm^2$ 5-cell stack at $750^{\circ}C$. The electrolysis cell consists of Ni-YSZ steam/hydrogen electrode, YSZ electrolyte and LSCF based perovskite as air side electrode. The active area of one cell is 92.16 $cm^2$. The hydrogen production system was operated for 2664 hours and the performance of electrolysis stack was measured by means of current variation with from 6 A to 28 A. The maximum hydrogen production rate and current efficiency was 47.33 NL/hr and 80.90% at 28 A, respectively. As the applied current increased, hydrogen production rate, current efficiency and the degradation rate of stack were increased respectively. From the result of stack performance, optimum operation current of this system was 24 A, considering current efficiencies and cell degradations.


Grant : 원자력이용 고온전기분해 수소생산기술(I)

Supported by : 한국수력원자력(주)


  1. Meng Ni, Michael K.H. Leung, Dennis Y.C. Leung, "Technological development of hydrogen production by solid oxide electrolyzer cell (SOEC)", International Journal of Hydrogen Energy, Vol. 33, 2008, pp. 2337-2354.
  2. Zhenwei Wang, Masashi Mori, Takuto Araki, "Steam electrolysis performance of intermediate -temperature solid oxide electrolysis cell and efficiency of hydrogen production system at 300 $Nm^{3}h^{-1}$", International Journal of Hydrogen Energy, Vol. 35, 2010, pp. 4451-4458.
  3. 고재화, 윤덕주, 유영성, 최미화, "고온전기분해 수소생산 시스템 개발 및 현황", 한국수소 및 신에너지학회 2010 춘계학술대회 논문집, pp. 191-193.
  4. 박재근, 양수용, 이태희, 오제명, 유영성, 박진우, "중․저온형 SOFC를 위한 Ni-YSZ 연료극 지지체형 단전지 미세구조와 전기적 특성", Journal of the Korean Ceramic Society, Vol. 43, No. 12, 2006, pp. 823-828.
  5. 이태희, 최진혁, 박태성, 유영성, 남석우, "1kW 고체산화물 연료전지(SOFC) 시스템 설계 및 자열운전", 한국수소 및 신에너지학 회 논문집, Vol. 20, No. 4, 2009, pp. 1-7.
  6. Annabelle Brisse, Josef Schefold, Moshine Zahid, "High temperature water electrolysis in solid oxide cells", International Journal of Hydrogen Energy, Vol. 33, 2008, pp. 5375-5382.