Effect of electrical current on solid oxide fuel cells metallic interconnect oxidation in syngas

Yihong Li; Yinglu Jiang; Junwei Wu; Richard Pineault; Randall Gemmenn; Xingbo Liu

doi:10.1111/j.1744-7402.2009.02430.x

Effect of electrical current on solid oxide fuel cells metallic interconnect oxidation in syngas

Yihong Li^*
, Yinglu Jiang
, Junwei Wu
, Richard Pineault
, Randall Gemmenn
, Xingbo Liu

^*Corresponding author for this work

National Energy Technology Laboratory, Morgantown
West Virginia University

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Electrical current flow is one of the important factors influencing high-temperature oxidation of SOFC interconnects. To understand the effect of electric current on corrosion behavior, Crofer 22 APU and Haynes 230//SS430 clad coupons were exposed to a simulated coal syngas at 800°C with a current density of 0.5 A/cm², for 500 h. It was found that the scale formed on the positive side was thicker than that formed on the negative side. In particular, for Crofer 22 APU, the morphology of the scale formed on the positive side was whisker-like while the scale formed on the negative side was predominantly cubic-shaped crystals. For Haynes 230//SS430 clad sample, some grain-shaped crystals appeared on SS 430 (negative) side due to the breakaway oxidation.

Original language	English
Pages (from-to)	41-48
Number of pages	8
Journal	International Journal of Applied Ceramic Technology
Volume	7
Issue number	1
DOIs	https://doi.org/10.1111/j.1744-7402.2009.02430.x
State	Published - Jan 2010
Externally published	Yes

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title = "Effect of electrical current on solid oxide fuel cells metallic interconnect oxidation in syngas",

abstract = "Electrical current flow is one of the important factors influencing high-temperature oxidation of SOFC interconnects. To understand the effect of electric current on corrosion behavior, Crofer 22 APU and Haynes 230//SS430 clad coupons were exposed to a simulated coal syngas at 800°C with a current density of 0.5 A/cm2, for 500 h. It was found that the scale formed on the positive side was thicker than that formed on the negative side. In particular, for Crofer 22 APU, the morphology of the scale formed on the positive side was whisker-like while the scale formed on the negative side was predominantly cubic-shaped crystals. For Haynes 230//SS430 clad sample, some grain-shaped crystals appeared on SS 430 (negative) side due to the breakaway oxidation.",

author = "Yihong Li and Yinglu Jiang and Junwei Wu and Richard Pineault and Randall Gemmenn and Xingbo Liu",

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T1 - Effect of electrical current on solid oxide fuel cells metallic interconnect oxidation in syngas

AU - Li, Yihong

AU - Jiang, Yinglu

AU - Wu, Junwei

AU - Pineault, Richard

AU - Gemmenn, Randall

AU - Liu, Xingbo

PY - 2010/1

Y1 - 2010/1

N2 - Electrical current flow is one of the important factors influencing high-temperature oxidation of SOFC interconnects. To understand the effect of electric current on corrosion behavior, Crofer 22 APU and Haynes 230//SS430 clad coupons were exposed to a simulated coal syngas at 800°C with a current density of 0.5 A/cm2, for 500 h. It was found that the scale formed on the positive side was thicker than that formed on the negative side. In particular, for Crofer 22 APU, the morphology of the scale formed on the positive side was whisker-like while the scale formed on the negative side was predominantly cubic-shaped crystals. For Haynes 230//SS430 clad sample, some grain-shaped crystals appeared on SS 430 (negative) side due to the breakaway oxidation.

AB - Electrical current flow is one of the important factors influencing high-temperature oxidation of SOFC interconnects. To understand the effect of electric current on corrosion behavior, Crofer 22 APU and Haynes 230//SS430 clad coupons were exposed to a simulated coal syngas at 800°C with a current density of 0.5 A/cm2, for 500 h. It was found that the scale formed on the positive side was thicker than that formed on the negative side. In particular, for Crofer 22 APU, the morphology of the scale formed on the positive side was whisker-like while the scale formed on the negative side was predominantly cubic-shaped crystals. For Haynes 230//SS430 clad sample, some grain-shaped crystals appeared on SS 430 (negative) side due to the breakaway oxidation.

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DO - 10.1111/j.1744-7402.2009.02430.x

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JO - International Journal of Applied Ceramic Technology

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Effect of electrical current on solid oxide fuel cells metallic interconnect oxidation in syngas

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