|【文章摘要】 Dual-phase ceramic membranes composed of BaCe0.8Y0.2O3 (BCY) and Ce0.8Y0.2O2 (CYO) were successfully synthesized by solid state reaction method for hydrogen permeation. The influences of the BCY/CYO volume ratios on phase composition, microstructure, chemical stability and electrical property were investigated. The hydrogen permeation of the dual-phase composite was characterized as a function of temperature and feed side hydrogen partial pressure. The results showed that there was no reaction between the two constituent oxides observed under the preparation conditions. The dual-phase composite with different BCY/CYO volume ratios after sintering at 1550 degrees C exhibited dense structure, as well as good stability in 4% H-2/Ar, wet Ar and pure CO2 atmosphere. The conductivity of the dual -phase composite increased with the content of CYO increasing and 30BCY-70CYO exhibited the highest total conductivity of 2.6 x 10(-2) S cm(-1) at 800 degrees C in 4% H-2/Ar. The hydrogen permeability of 30BCY-70CYO sample was improved as the temperature and the hydrogen partial pressure in feed gas increased. The hydrogen permeation flux of 1.7 mu mol cm(-2) s(-1) was achieved at 850 degrees C. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.