摘要
质子传导固体氧化物燃料电池具有广阔的应用前景,本文探索以BaCeO3为主体均相复合BaZrO3,采用ZnO为烧结助剂,制备了Y和Yb复合掺杂的BaZrO3-BaCeO3即BaCe0.5Zr0.3Y0.2-xYbxO3-δ(x=0、0.08、0.16)质子导体,重点研究了Y和Yb复合掺杂对质子导体材料烧结性、微观结构和电导率的影响。实验结果表明,x=0时,即BCZY-Z试样具有较好的性能,1350℃烧结6 h试样相对密度达到了97.1%,600℃电导率为6.3×10-3S/cm,700℃晶界电阻只有18Ω。
Proton-conducting solid oxide fuel ceils have been found wide applications. This paper focuses on exploration of a proton-conducting material BaCe0.5Zr0.3Y0.2-xYbxO3-δ （ x = 0, 0.08, 0. 16）. BaCeO3 as a host was combined with BaZrO3 to form a homogeneous composite BaZrO3-BaCeO3 and ZnO was used as a sintering aid. The effects of Y and Yb co-doping on the sinterability, microstructure and conductivity of BaCe0.5Zr0.3Y0.2-xYbxO3-δ（x = 0, 0.08, 0. 16） proton-conductors were investigated. Experimental results indicated that BCZY-Z showed relatively good properties. 97. 1% of theoretical density was reached after sintering at 1350 ℃ for 6 h. The conductivity was as high as 6.3 ×10^-3S/cm at 600 ℃ in wet hydrogen. The grain boundary resistance only had 18 Ω at 700 ℃.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2014年第3期515-519,525,共6页
Bulletin of the Chinese Ceramic Society
基金
贵州省省校科技合作计划项目([2011]7002)
