Fe alloying effect on the performance of the Ni anode in hydrogen fuel

被引：26

作者：

Lu, X. C. ^{[1
]}

Zhu, J. H. ^{[1
]}

Bi, Z. H. ^{[1
]}

机构：

[1] Tennessee Technol Univ, Dept Mech Engn, Cookeville, TN 38505 USA

来源：

SOLID STATE IONICS | 2009年 / 180卷 / 2-3期

关键词：

Solid oxide fuel cell; Ni-Fe alloy; Anode; H-2; oxidation; Polarization resistance; H-2-INDUCED ENVIRONMENTAL EMBRITTLEMENT; CELLS; NI3FE; SOFC; YSZ; IMPEDANCE; COMPOSITE; ELECTRODE; O-2;

D O I：

10.1016/j.ssi.2008.12.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Composite materials of YSZ (yttria-stabilized zirconia) with various Ni-Fe alloys were synthesized and evaluated as the solid oxide fuel cell (SOFC) anode using a 200-mu m thick YSZ electrolyte as support and YSZ+ La0.8Sr0.2MnO3 (LSM) as cathode. The single cell with the YSZ+Ni0.75Fe0.25 anode exhibited the highest performance among all the investigated cells, e.g. a peak power density of 403, 337,218 and 112 mW/cm(2) was achieved with H-2 fuel at 900, 850, 800 and 750 degrees C, respectively. The composite anode with the Ni0.75Fe0.25 alloy also had the lowest polarization resistance of 0.55 Omega.cm(2) at 800 degrees C among all the alloy compositions, indicating that this specific alloy offered a better anode composition than pure Ni. The possible mechanism for the improved performance of Ni with the Fe alloying addition towards H-2 oxidation was discussed. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：265 / 270

页数：6

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