| 초록 |
Electrocatalytic reforming of CO2 with CH4 is an attractive option in the point of environmental and industrial because of cogeneration which can be produced syngas and electricity. Furthermore, greenhouse gases are converted into valuable feedstock. The single cell system of solid oxide fuel cell(SOFC) consists of perovskite type cathode (LaxSr(1-x)NixCr(1-x)O3, LaxNixCr(1-x)O3, etc.), catalyst anode(NiO) and Y2O3 stabilized ZrO2(YSZ) electrolyte. The conversions of CO2 and CH4, and electrochemical properties of SOFC single cell were measured under open-circuit condition and short-circuit condition. LaxSr(1-x)NixCr(1-x)O3 cathode was superior to other cathode in terms of conversion and power generation. Short-circuit condition was more stable than open-circuit condition. The results were showed that the stability of catalyst electrode depend on the reaction of oxygen ion transferred from cathode with the surface carbon formed in internal CO2 reforming by CH4 in SOFC system. |
