Deposition and electrochemical characterization of Yttrium doped Barium cerate and zirconate heterostructures

被引：4
|
作者：
Yang, N. [1 ,2 ,3 ,4 ]
Tebano, A. [3 ,4 ]
Di Castro, D. [3 ,4 ]
Balestrino, G. [3 ,4 ]
D'Epifanio, A. [1 ,2 ]
Licoccia, S. [1 ,2 ]
Di Bartolomeo, E. [1 ,2 ]
机构：
[1] Univ Roma Tor Vergata, Dept Chem Sci & Technol, I-00133 Rome, Italy
[2] Univ Roma Tor Vergata, NAST Ctr, I-00133 Rome, Italy
[3] Univ Roma Tor Vergata, CNR, SPIN, I-00133 Rome, Italy
[4] Univ Roma Tor Vergata, Dept Civil Engn & Comp Sci Engn, I-00133 Rome, Italy
来源：
THIN SOLID FILMS | 2014年 / 562卷
关键词：
Heterostructures; High Temperature Proton Conductors; Solid Oxide Fuel Cells; Pulsed Laser Deposition; OXIDE FUEL-CELL; THIN-FILMS; ELECTRICAL-CONDUCTIVITY; TRANSPORT-PROPERTIES; ELECTROLYTE; PERFORMANCE; FABRICATION; CONDUCTORS; STABILITY; DESIGN;
D O I：
10.1016/j.tsf.2014.04.073
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Epitaxial heterostructures consisting of an yttrium doped barium cerate, BaCe0.8Y0.2O3,(BCY) layer sandwiched between two yttrium doped barium zirconate, BaZr0.8Y0.2O3,(BZY) thin layers have been deposited on insulating (001) MgO substrates by pulsed laser deposition. The first BZY layer was aimed at improving the lattice match with the MgO substrate, the second at protecting the BCY layer. Ionic conductivity has been studied in the 300 degrees C-600 degrees C temperature range as a function of the BCY thickness in dry air and wet 5% H-2 in Ar atmosphere. In both atmospheres, heterostructures showed a conductivity slightly larger than that of BCY pellets sintered under optimized conditions. Such a result has been attributed to the absence of blocking grain boundaries in the epitaxial heterostructures due to their good crystallographic quality. The BCY sandwich heterostructures showed an improved chemical stability relative to standard BCY pellets. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：264 / 268
页数：5
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