钛掺杂对质子导体BaCe0．8Y0．2O3-δ稳定性以及电性能的影响  

Influence of Ti doping on the Stability and Electrical Performance of Proton Conductor BaCe_(0.8)Y_(0.2)O_(3-δ)

作　　者：迟晓伟[1] 温兆银[1] 张敬超[1] 刘宇[1] 吴相伟[1] 

机构地区：[1]中国科学院上海硅酸盐研究所,中国科学院能量转换材料重点实验室,上海200050

出　　处：《硅酸盐学报》2013年第7期959-965,共7页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(50802108;51072211)资助项目

摘　　要：采用固相反应法成功制备具有不同Ti掺杂量的BaCe0.8–xY0.2TixO3–δ(x=0,0.05,0.10,0.15,0.20)纯相粉体,进一步通过20 h的球磨处理获得了具有理想粒径分布的陶瓷粉体。在1600℃进行烧结,获得了显微结构较理想的致密陶瓷。陶瓷的阻抗谱分析结果表明:Ti的掺杂并没有明显影响BaCe0.8Y0.2O3–δ的导电性,并且即使0.05的Ti掺杂量也使BaCe0.8Y0.2O3–δ在94%N2+3%CO2+3%H2O气氛中的化学稳定性得到了显著的提高,证明Ti是BaCe0.8Y0.2O3–δ体系一种理想的掺杂剂。Pure phase BaCe0.s-xY0.2TixO3-δ powders with different contents of Ti dopant （x=O, 0.05, 0.10, 0.15 and 0.20） were synthe- sized by a solid state reaction method. The powder was ground for 20 h to obtain the desired particle size distribution. The high den- sity ceramics with the favorable microstructure were obtained with the ground powder after sintered at 1 600 ℃. The impedance analysis indicates that the chemical stability of BaCeo.sYo.203-δ ceramics against the 94%N2＋3%CO2＋3%H20 atmosphere is im- proved even at a low Ti doping level of 0.05, and the Ti dopant does not decrease the electrical conductivity of BaCeo.sYo.203-δ ceramics, reflecting that Ti is a good candidate for BaCeo.sYo.203-δ toward high stability.

关 键 词：质子导体 铈 钡 钛 球磨 化学稳定性 电导率 

分 类 号：TM911.4[电气工程—电力电子与电力传动]