Experimental Analysis on the Electrochemical Performance of Co-Electrolysis in Solid Oxide Cells Under Pressurized Operation Conditions

Tuesday, 25 July 2017
Grand Ballroom East (The Diplomat Beach Resort)
S. Yu (Korea Institute of Energy Research), J. E. Hong (Korea Institute of Energy Research (KIER)), J. W. Lee, S. B. Lee, S. J. Park, T. H. Lim, and R. H. Song (Korea University of Science and Technology (UST), Korea Institute of Energy Research (KIER))
Application of solid oxide cells to co-electrolysis of H2O and CO2 that uses an extra power derived from the renewable energy resource of solar or wind power has been attracting much attention since carbon dioxide can be reused into hydrocarbon fuels. In particular, when using a catalyst or high pressure at downstream, reactant gases of CO and H2 in the co-electrolysis can be converted to synthetic hydrocarbon fuels that are possible to be stored or transported. This study introduces the method that simplified the process of upstream and downstream in a pressurized operation system for co-electrolysis and the electrochemical performance of the cells which was dependant on operation pressure. It was confirmed that the cells could be operated at higher current densities upon increasing the operation pressure as the polarization resistance dramatically decreased.