Abstract
A novel electrolyte based on Gd doped CaMoO4 with scheelite structure has been investigated. X-ray diffraction results show that the single-phase scheelite structure can be formed at 900°C. Electrochemical measurement results indicate that the addition of certain quantity Gd2O3 (x=0.5) can increase the conductivity of CaMoO4 obviously. The total conductivity of Ca0.5Gd0.5MoO4+δ can reach 0.017Scm−1 at 800°C. The spectra follow the Arrhenius law with two activation energy 1.636eV for T<873K and 1.364eV for T>873K. Overall, Gd doped CaMoO4 composite material with scheelite structure directs a new strategy to design novel electrolyte for SOFCs applications.
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