(河北理工大学 化工与生物技术学院，唐山 063009)
摘 要:
关键字: BaZr0.45Ce0.45Gd0.1O3−δ；高温质子导体；烧结；化学稳定性；电导率
（College of Chemical Engineering and Biotechnology, Hebei Polytechnic University, Tangshan 063009, China）
Abstract:The high temperature proton conductor BaZr0.45Ce0.45Gd0.1O3−δ was synthesized by solid-state reaction. The phase composition, microstructures and electrical conducting property of samples sintered at different temperatures were investigated by XRD, SEM and AC impedance spectroscopy. The chemical stability of specimen in boiling water and CO2 atmosphere was tested. The results indicate that the sample sintered at 1 600 ℃ is single phase, with high density and electrical conductivity. Its conductivity at 800 ℃ reaches 0.82×10−2 S/cm. The conducting activity energy is 0.74 eV. BaZr0.45Ce0.45Gd0.1O3−δ shows better chemical stability against carbon dioxide than boiling water.
Key words: BaZr0.45Ce0.45Gd0.1O3−δ; high temperature proton conductor; sintering; chemical stability; conductivity
