Abstract: Anode-supported solid oxide fuel cell with LDC-LSGM bilayer electrolytes and GDC+NiO anode substrate was fabricated and operated by using H₂ and methanol as the fuels respectively at temperatures from 650 to 800 ℃. At 800 ℃, the single cell exhibits the maximum output power density of 1.54 W/cm² with H₂ as the fuel and that of 1.07 W/cm² with methanol as the fuel. The impedance spectra of the single cell show some differences when the two different fuels are respectively used, and the anode activity towards methanol is the key factor for the cell performance.

Key words: IT-SOFC, Anode-supported type, Bilayer electrolytes film, Direct-methanol oxidation