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Urea combustion method was adopted to prepare precursor powder, MCeO3 doped with Zr (M is alkaline earth element, such as barium, strontium, and calcium). The precursor powder has typically perovskite structure after being calcined at 873 K. In 773 K∼1,273 K, BaCe0.425Zr0.475Y0.1O3 has the highest conductivity above 10−2 S cm−1 and good chemical stability, while the phase transition may exist in H2S atmosphere for the proton conductors. In the single fuel cell composed of MoS2-BaCe0.425Zr0.475Y0.1O3-σ-Ag with BaCe0.425Zr0.475Y0.1O3-σ as electrolyte, the best performance is obtained. The open circuit voltage of fuel cell is all about 0.72 V, the max power density, 1.55 mW cm−2. The performance drop is attributed to ohmic loss resulting from the separation of electrolyte and electrode, and improvement is required to bring out new anode materials compatible to the proton conductor, BaCe0.425Zr0.475Y0.1O3-σ, as electrolyte. [ABSTRACT FROM AUTHOR]