A chemically stable electrolyte with a novel sandwiched structure for proton-conducting solid oxide fuel cells (SOFCs)

被引：25
|
作者：
Bi, Lei [1 ]
Traversa, Enrico [1 ]
机构：
[1] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2013年 / 36卷
关键词：
BaCeO3-BaZrO3; Chemical stability; Proton conductor; Sandwiched electrolyte; SOFC; DOPED BARIUM ZIRCONATE; ELECTROCHEMICAL PROPERTIES; THIN-FILMS; IT-SOFCS; PERFORMANCE; STABILITY; FABRICATION;
D O I：
10.1016/j.elecom.2013.09.011
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A chemically stable electrolyte structure was developed for proton-conducting SOFCs by using two layers of stable BaZr0.7Pr0.1Y0.2O3-delta to sandwich a highly-conductive but unstable BaCe0.8Y0.2O3-delta electrolyte layer. The sandwiched electrolyte structure showed good chemical stability in both CO2 and H2O atmosphere, indicating that the BZPY layers effectively protect the inner BCY electrolyte, while the BCY electrolyte alone decomposed completely under the same conditions. Fuel cell prototypes fabricated with the sandwiched electrolyte achieved a relatively high performance of 185 mW cm(-2) at 700 degrees C, with a high electrolyte film conductivity of 4 x 10(-3) S cm(-1) at 600 degrees C. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：42 / 45
页数：4
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