화학공학소재연구정보센터
Journal of Applied Electrochemistry, Vol.39, No.4, 553-557, 2009
Synthesis and proton incorporation in BaCe0.9-x Zr (x) Y0.1O3-delta
BaCe0.9-x Zr (x) Y0.1O3-delta powders were synthesized by a solid-state method at 1,400 A degrees C. Two compositions were studied (x = 0.3 and x = 0.7). Pellets were prepared and conventionally sintered in air at 1,700 A degrees C. Then, the samples were heated at 600 A degrees C for 3 h in different reducing atmospheres: dry hydrogen, wet hydrogen and wet deuterium. After each treatment, the proton diffusion depth profile was obtained using Secondary Ion Mass Spectroscopy (SIMS). Protons were not incorporated in the material when the gas was not wet, and the isotope effect suggests that protons present in the pellet come from water and not from hydrogen.