CO2CH4 reforming high temperature proton conductor (HTPC) fuel cells

High temperature proton conductors (HTPCs) based fuel cells directly fed with methane mixtures were investigated. Doped barium zirconate was chosen as electrolyte because of its good chemical stability in CO2 and H 2O containing atmosphere. The sintering temperature of doped barium zirconate was decreased down to 1350C by doping with 1wt. ZnO. A co-pressing method was used for fabricating anode supported single cell. Flat and reproducible bottom cell of NiO-BZYZn BZYZn Pt were produced. OCV measurements, I-V curves, and impedance spectra were recorded in the 600-750C temperature range. The addition of carbon dioxide to methane improved SOFC stability by suppressing coking in Ni anodes. © 2011 The Electrochemical Society