Stable proton-conducting Ca-doped LaNbO4 thin electrolyte-based protonic ceramic membrane fuel cells by in situ screen printing

被引：42

作者：

Lin, Bin ^{[1
]}

Wang, Songlin ^{[1
]}

Liu, Xingqin ^{[1
]}

Meng, Guangyao ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, USTC Lab Solid State Chem & Inorgan Membranes, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 478卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Solid oxide fuel cells; Ca-doped LaNbO4; Proton-conducting electrolyte; Screen printing; In situ reaction;

D O I：

10.1016/j.jallcom.2008.11.058

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 order to develop a simple and cost-effective route to fabricate protonic ceramic membrane fuel cells (PCMFCs), a stable proton-conducting La0.99Ca0.01NbO4 (LCN) thin electrolyte was fabricated on a porous NiO-La0.5Ce0.5O1.75 (NiO-LDC) anode by in situ screen printing. The key part of this process is to directly print well-mixed ink of La2O3, CaCO3 and Nb2O5 instead of pre-synthesized LCN ceramic powder on the anode substrate. After sintering at 1400 degrees C for 5 h, the full dense electrolyte membrane in the thickness of 20 mu m was obtained. A single cell was assembled with (La0.8Sr0.2)(0.9)MnO3-delta-La0.5Ce0.5O1.75 (LSM-LDC) as cathode and tested with humidified hydrogen as fuel and static air as oxidant. The open circuit voltage (OCV) and maximum power density respectively reached 0.98 V and 65 mW cm(-2) at 800 degrees C. Interface resistance of cell under open circuit condition was also investigated. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：355 / 357

页数：3

共 12 条

[1] Thermodynamic analysis of a methane fed SOFC system based on a protonic conductor [J].