期刊
JOURNAL OF POWER SOURCES
卷 248, 期 -, 页码 239-245出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.09.043
关键词
Solid oxide fuel cell; Anode; Methane; Electrochemical performance; Ni/SDC
资金
- NSF of China [21076150, 21120102039]
- Program of Introducing Talents [B06006]
- Program for Changjiang Scholars and Innovative Research Teams in Universities [IRT 0641]
- NSF [DMR-0320740]
A Ni/Sm0.2Ce0.8O1 (sDc) composite was employed as anode material for direct electrochemical oxidation (DEO) of dry CH4 in a solid oxide fuel cell. The anodic performance was investigated at temperatures between 600 degrees C and 700 degrees C using SDC as electrolyte material and Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) as cathode material. The single cell exhibited maximum power densities of 671 mW cm(-2), 494 mW cm(-2) and 305 mW cm(-2) in dry CH4 at 700 degrees C, 650 degrees C and 600 degrees C, respectively. Remarkably, at 700 degrees C the power density in CH4 was higher than in H-2, thanks to the carbon tolerance of the anode. Durability tests under constant 300 mA output current showed only 3.7% performance loss after 72 h operation. The results demonstrate that Ni/SDC can be used as anode for the DEO of dry CH4 even at temperatures as low as 600 degrees C. (C) 2013 Elsevier B.V. All rights reserved.
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