采用ZnO掺杂和与ZnO直接混合两种方式分别制备10 wt%BaZr0.9Y0.1O2.95-90 wt%BaCe0.86Y0.1Zn0.04O2.91（BZY-BCYZn）和10wt%BaZr0.9Y0.1O2.95-90wt%BaCe0.9Y0.1O2.95-ZnO（BZY-BCY-ZnO）复相电解质材料,比较ZnO的不同引入方式对BZY-BCY复相电解质烧结和电性能的影响。结果表明:ZnO掺杂制备的BZYBCYZn电解质材料具有更加致密的显微结构和更高的电导率,在1350℃烧结5h基本达到致密,在600℃湿润Ar条件下电导率达到7.3mS/cm。

BaZr0.9Y0.1O3-delta (BZY):BaCe0.86Y0.1Zn0.04O3-delta (BCYZn) proton conductors were synthesized by a gel polymerization and ball milling method. XRD results show that the phases of Y doped BaZrO3 and Y and Zn co-doped BaCeO3 were identified for the composite electrolytes calcined at 1000 degrees C for 3 h. After sintering at 1350 degrees C for 5 h, only one phase is observed by XRD, which suggests the formation of BaZrO3-BaCeO3 solid solution. The relative density and conductivity of samples increase with increasing BCYZn content. The total conductivity reaches 7.4 x 10(-3) S cm(-1) at 600 degrees C under moist Ar, and it can be used as a proton-conducting electrolyte for the intermediate temperature solid oxide fuel cells. (C) 2015 Elsevier B.V. All rights reserved.

The new developments of CeO2-based electrolytes are reviewed,especially the enhanced mechanism of ionic conductivity of doubled doping and CeO2-based composite electrolyte,and the development trends of CeO2-based electrolytes are proposed.

Research progress in composite electrolyte materials for intermediate-to-low temperature solid oxide fuel cell(SOFC)was introduced.The structure design,preparation,enhanced mechanism of conductivity and performance of single cell of Y doped ZrO2/insulator,doped CeO2/insulator,doped CeO2/inorganic salt and proton conductor based composite electrolyte materials were mainly reviewed.The possibility,existed problems and development trend of nanocomposite electrolyte materials applied in intermediate-to-low temperature SOFC were pointed out.