Effect of Co alloying on the electrochemical performance of Ni-Ce0.8Gd0.2O1.9 anodes for hydrocarbon-fueled solid oxide fuel cells

被引：28

作者：

Cho, Chun-Kang ^{[2
]}

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, Dept Hydrogen Fuel Cells Engn, Specialized Grad Sch, Jeonju 561756, South Korea

[3] Korea Inst Ceram Engn & Technol, Opt & Elect Ceram Div, Seoul 153801, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 541卷

关键词：

Composite materials; Solid oxide fuel cell; Anode; Ni-Co alloy; Carbon deposition; CARBON DEPOSITION; OXIDATION; NI; CATALYSTS; METHANE; PEROVSKITE; STABILITY; KINETICS;

D O I：

10.1016/j.jallcom.2012.07.012

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：

Ni-Co alloy-based cermets have been characterized as alternative materials for the anode in hydrocarbon-fueled solid oxide fuel cells. Ni1-xCox-Ce0.8Gd0.2O1.9 cermet anodes were co-synthesized using a glycine nitrate process without further mixing processes. Both the electrical conductivity and the amount of carbon deposits were reduced by Co alloying, while the polarization resistance in H-2 atmosphere increased with increasing Co content. The anode polarization resistance in a CH4 atmosphere also decreased with an increasing Co content. These findings were strongly correlated with the carbon deposition behavior. Co alloying was effective at suppressing the deposition of carbon and improving the electrochemical performance of solid oxide fuel cells that operate on CH4 fuel. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：433 / 439

页数：7

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