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http://dx.doi.org/10.7316/khnes.2011.22.5.641

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

Choi, Mi-Hwa (KEPCO Research Institute)
Choi, Jin-Hyeok (KEPCO Research Institute)
Lee, Tae-Hee (KEPCO Research Institute)
Yoo, Young-Sung (KEPCO Research Institute)
Koh, Jae-Hwa (KHNP-Central Research Institute)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.5, 2011 , pp. 641-648 More about this Journal
Abstract
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.
Keywords
High temperature electrolysis; Hydrogen production; Solid oxide electrolysis cell; Very high temperature reactor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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