Internal Methane Reforming High Temperature Proton Conductor (HTPC) Fuel Cells

摘要

High temperature proton conductor (HTPC) based fuel cells directly fed with methane mixtures were investigated. Doped barium zirconate was chosen as the electrolyte because of its good chemical stability in CO_2 and H_2O containing atmosphere. The sintering temperature of doped barium zirconate was decreased down to 1350°C by doping with 1 wt% ZnO. A co-pressing method was used for fabricating anode supported single cell. Flat and reproducible bottom cell of NiO BZYZn/BZYZn/LSCF were produced. OCV measurements, I-V curves, and impedance spectra were recorded in the 600-700°C temperature range. The addition of carbon dioxide to methane improved SOFC stability by suppressing coking in Ni anodes.