Sinteractivity, proton conductivity and chemical stability of BaZr0.7In0.3O3-δ for solid oxide fuel cells (SOFCs)

被引：65
作者：
Bi, Lei [1 ]
Fabbri, Emiliana [1 ]
Sun, Ziqi [1 ]
Traversa, Enrico [1 ]
机构：
[1] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton MANA, Tsukuba, Ibaraki 3050044, Japan
来源：
SOLID STATE IONICS | 2011年 / 196卷 / 01期
关键词：
BaZrO3; Ceramic membrane; Proton conductor; Sintering; Solid oxide fuel cell (SOFC); DOPED BARIUM ZIRCONATE; ELECTROLYTE; ANODE; FABRICATION; DOPANT; MICROSTRUCTURE; PERFORMANCE; IMPROVE; DESIGN; FILMS;
D O I：
10.1016/j.ssi.2011.06.014
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In3+ was used as dopant for BaZrO3 proton conductor and 30 at%-doped BaZrO3 samples (BaZr0.7In0.3O3-delta. BZI) were prepared as electrolyte materials for proton-conducting solid oxide fuel cells (SOFCs). The BZI material showed a much improved sinteractivity compared with the conventional Y-doped BaZrO3. The BZI pellets reached almost full density after sintering at 1600 degrees C for 10 h, whereas the Y-doped BaZrO3 samples still remained porous under the same sintering conditions. The conductivity measurements indicated that BZI pellets showed smaller bulk but improved grain boundary proton conductivity, when compared with Y-doped BaZrO3 samples. A total proton conductivity of 1.7 x 10(-3) S cm(-1) was obtained for the BZI sample at 700 degrees C in wet 10% H-2 atmosphere. The BZI electrolyte material also showed adequate chemical stability against CO2 and H2O, which is promising for application in fuel cells. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：59 / 64
页数：6
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