High-performance intermediate temperature fuel cells of new SrCe0.9Yb0.1O3-α-inorganic salt composite electrolytes

被引：21
|
作者：
Zhang, Wenbao [1 ]
Yuan, Miaomiao [1 ]
Wang, Hongtao [1 ]
Liu, Jie [1 ]
机构：
[1] Fuyang Teachers Coll, Sch Chem & Mat Engn, Anhui Prov Key Lab Degradat & Monitoring Pollut E, Fuyang 236037, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 677卷
基金：
中国国家自然科学基金;
关键词：
SrCeO3; Composite; Electrolyte; Fuel cell; Conductivity; XRD; HYDROGEN PERMEATION; DOPED CERIA; STABILITY; CO; CONDUCTIVITY; BEHAVIOR; CATHODE;
D O I：
10.1016/j.jallcom.2016.03.245
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：
In this study, novel dense SrCe0.9Yb0.1O3-alpha-(Na/K)Cl (SCY-NK), SrCe0.9Yb0.1O3-alpha-(Li/K)(2)CO3 (SCY-LK) and SrCe0.9Yb0.1O3-alpha-NaCl-CaCl2 (SCY-NC) composite electrolytes were synthesized at lower temperature. The result of SEM images indicates that the composites are sufficiently dense. The highest conductivities are observed to be 1.2 x 10(-1) S cm(-1) for SCY-NK at 700 degrees C, 1.0 x 10(-1) S cm(-1) for SCY-LK at 600 degrees C and 3.3 x 10(-2) S cm(-1) for SCY-NC at 600 degrees C, respectively. The log sigma similar to log (pO(2)) plots result indicates that the composites are almost pure ionic conductors under hydrogen-containing atmosphere. The H-2/O-2 fuel cells using the SCY-NK, SCY-LK and SCY-NC as electrolytes generate the maximum power densities of 425 mW cm(-2) at 700 degrees C, 256 mW cm(-2) at 600 degrees C and 133 mW cm(-2) at 600 degrees C, correspondingly. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：38 / 41
页数：4
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