Properties and electrochemical performance of La0.75Sr0.25Cr0.5Mn0.5O3-δ-La0.2Ce0.8O2-δ composite anodes for solid oxide fuel cells

被引：25
|
作者：
Rath, Manas K. [1 ]
Choi, Byung-Hyun [3 ]
Lee, Ki-Tae [1 ,2 ]
机构：
[1] Chonbuk Natl Univ, Div Adv Mat Engn, Jeonju 561756, South Korea
[2] Chonbuk Natl Univ, Hydrogen & Fuel Cell Res Ctr, Jeonju 561756, South Korea
[3] Korea Inst Ceram Engn & Technol, Opt & Elect Ceram Div, Seoul 153801, South Korea
来源：
JOURNAL OF POWER SOURCES | 2012年 / 213卷
关键词：
Solid oxide fuel cells; Perovskite; Sol-gel; Oxide anodes; Carbon deposition; DIRECT-OXIDATION; SULFUR TOLERANCE; SOFC ANODES; METHANE; CONDUCTIVITY; HYDROCARBON; CERIA; LA; STABILITY;
D O I：
10.1016/j.jpowsour.2012.03.105
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：
Highly crystalline composite anodes composed of La0.75Sr0.25Cr0.5Mn0.5O3-delta-La0.2Ce0.8O2-delta (LSCM-LDC) have been synthesized using a simple modified sol gel method. LSCM is known for its superior redox stability. LDC acts both as an agent that blocks grain growth in LSCM, and reduces the area-specific resistance of the electrode, thereby enhancing the overall electrochemical performance of single cells. However, the carbon deposition rate of LSCM LDC composite anodes increases with increasing LDC content. The optimal anode composition is 50 wt.% LSCM-50 wt.% LDC. This composite has a polarization resistance of 0.081 Omega cm(2) and 0.130 Omega cm(2) in H-2 and CH4, respectively, measured at 800 degrees C. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：55 / 62
页数：8
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