Fabrication and performance of a proton-conducting solid oxide fuel cell based on a thin BaZr0.8Y0.2O3-δ electrolyte membrane

被引：123

作者：

Sun, Wenping ^{[1
]}

Yan, Litao ^{[1
]}

Shi, Zhen ^{[1
]}

Zhu, Zhiwen ^{[1
]}

Liu, Wei ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 15期

关键词：

Proton-conducting solid oxide fuel cells; Yttrium-doped barium zirconate; Membrane; Performance; DOPED BARIUM ZIRCONATE; CHEMICAL-STABILITY; IT-SOFCS; DESIGN;

D O I：

10.1016/j.jpowsour.2010.02.012

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：

A dense BaZr0.8Y0.2O3-delta (BZY) proton-conducting electrolyte membrane is successfully fabricated on a NiO-BaZr0.1Ce0.7Y0.2O3-delta (NiO-BZCY) anode substrate by a co-pressing process after co-firing at 1400 degrees C. BZY powders are synthesized via a citric acid-nitrate gel combustion process after calcination at 1100 degrees C. The SEM results reveal that the BZY membrane is crack-free, very dense, and 20 mu m thick. A single cell with Sm0.5Sr0.5CoO3-delta-Ce0.8Sm0.2O2-delta (SSC-SDC) as the cathode is assembled and tested with wet hydrogen (2% H2O) as the fuel and static air as the oxidant. The open circuit voltages (OCVs) are 0.953, 0.987, 1.014, and 1.039 Vat 700, 650, 600, and 550 degrees C, respectively. A maximum power density of 170 mW cm(-2) is obtained at 700 degrees C. Resistances of the testing cell are investigated under open circuit conditions at different operating temperatures by impedance spectroscopy. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：4727 / 4730

页数：4

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