Intermediate-to-low temperature protonic ceramic membrane fuel cells with Ba0.5Sr0.5Co0.8Fe0.2O3-δ-BaZr0.1Ce0.7Y0.2O3-δ composite cathode

被引：90

作者：

Lin, Bin ^{[1
]}

Ding, Hanping ^{[1
]}

Dong, Yingchao ^{[1
]}

Wang, Songlin ^{[1
]}

Zhang, Xiaozhen ^{[1
]}

Fang, Daru ^{[1
]}

Meng, Guangyao ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2009年 / 186卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Proton-conducting solid oxide fuel cells; BaZr0.1Ce0.7Y0.2O3-delta; Ba0.5Sr0.5Co0.8Fe0.2O3-delta; Cathode; Dry-pressing; DOPED BACEO3; SOFC; ELECTROLYTES;

D O I：

10.1016/j.jpowsour.2008.09.041

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：

The perovskite-type Ba0.5Sr0.5Co0.8Fe0.2O3-delta-BaZr0.1Ce0.7Y0.2O3-delta (BSCF-BZCY) composite oxides were synthesized by a modified Pechini method and examined as a novel composite cathode for intermediate-to-low temperature protonic ceramic membrane fuel cells (ILT-PCMFCs). Thin proton-conducting BaZr0.1Ce0.7Y0.2O3-delta (BZCY) electrolyte and NiO-BaZrotCe0.7Y0.203-8 (NiO-BZCY) anode functional layer were prepared over porous anode substrates composed of NiO-BaZr0.1Ce0.7Y0.2O3-delta by a one-step dry-pressing/co-firing process. A laboratory-sized quad-layer cell of NiO-BZCY/NiO-BZCY(similar to 50 mu m)/BZCY(similar to 20 mu m)/BSCF-BZCY(similar to 50 mu m) was operated from 550 to 700 degrees C with humidified hydrogen (similar to 3% H2O) as fuel and the static air as oxidant. A high open-circuit potential of 1.009V, a maximum power density of 418 mW cm(-2), and a low polarization resistance of the electrodes of 0.10 Omega cm(2) was achieved at 700 degrees C. These investigations have indicated that proton-conducting BZCY electrolyte with BSCF perovskite cathode is a promising material system for the next generation solid oxide fuel cells (SOFCs). (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：58 / 61

页数：4

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