Durability Testing of a Short SOFC Stack under Direct Internal Steam Reforming of Methane

被引：2

作者：

Fu, Qingxi ^{[1
]}

Freundt, Pierre ^{[2
]}

Bomhard, Jakob ^{[1
]}

Hauler, Felix ^{[2
]}

机构：

[1] European Inst Energy Res EIFER, Emmy Noether Str 11, D-76131 Karlsruhe, Germany

[2] ElringKlinger AG, D-72581 Dettingen Unter Teck, Erms, Germany

来源：

SOLID OXIDE FUEL CELLS 13 (SOFC-XIII) | 2013年 / 57卷 / 01期

关键词：

OXIDE FUEL-CELL; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; ANODES;

D O I：

10.1149/05701.0335ecst

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

One 5-cell SOFC stack has been tested under both hydrogen and direct internal steam reforming of methane for a total duration of 3200 hours. Electrochemical impedance spectroscopy has been used to monitor the evolution of internal resistances of all repeating units in the stack. It has been found that repeating units in the stack degraded two times faster under direct internal steam reforming of methane (6.7 - 14.4%/kh voltage degradation) than under H-2 (2.3 - 4.0%/kh). In combination with impedance results, this indicates deterioration of the anode as the main cause of degradation for operation under CH4/H2O. The degradation process is at least partially reversible when changing the gas from CH4 to H-2.

引用

页码：335 / 342

页数：8

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