Direct-methane solid oxide fuel cells were used to produce electricity and syngas. During initial operation at 750 degrees C, the cells produced 0.9 W/cm(2) and approximate to 90% methane conversion to syngas at a rate of 30 sccm/cm(2). However, the methane conversion decreased continuously over the first 30-40 h of operation, even though the solid oxide fuel cells (SOFC) electrical performance was stable. An additional catalyst layer on the anode yielded more stable methane conversion to syngas.