Ex-situ experimental benchmarking of solid oxide fuel cell metal interconnects

Manuel Bianco (Corresponding Author), J. Tallgren, Jong Eun Hong, Shicai Yang, Olli Himanen, J. Mikkola, Jan Van herle, Robert Steinberger-Wilckens

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Solid oxide fuel cells (SOFCs) can convert hydrocarbon fuels, such as methane, into heat and electricity with a high conversion efficiency. The fuel flexibility of the SOFC derives from the high operating temperature (600-900 °C). Such a high temperature stresses the materials used in the SOFC stacks, notably the metals constituting the interconnect (IC). Research centres developed in last twenty years specific alloys and coatings compositions. This led to a vast literature production of solutions to mitigate the degradation of the metals used in SOFC stacks. Unfortunately, the testing method and conditions change from one laboratory to another making the comparison of the results often impossible. This article compares systematically more than sixty different solutions to limit the degradation in the IC. The samples differed for the steel composition, the coating deposition technique, and the coating composition. A modified 4-probe technique and SEM/EDS post-test characterization measure the area specific resistance and chromium retention of the samples. Testing results indicate that i) deposition technique is the most relevant parameter, ii) in presence of coatings, the performances are independent of the type of ferritic stainless steel substrate iii) nitriding helps to limit the outward chromium diffusion in case of porous coatings.

Original languageEnglish
Article number226900
JournalJournal of Power Sources
Volume437
DOIs
Publication statusPublished - Oct 2019
MoE publication typeA1 Journal article-refereed

Fingerprint

Benchmarking
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
Metals
coatings
Coatings
metals
Chromium
chromium
Chemical analysis
degradation
ferritic stainless steels
hydrocarbon fuels
Degradation
nitriding
Steel
Nitriding
Stainless Steel
Methane
Ferritic steel

Keywords

  • Chromium poisoning
  • Corrosion evolution
  • Ferritic stainless
  • Interconnects
  • Protective coatings
  • Solid oxide fuel cell
  • Steels

Cite this

Bianco, Manuel ; Tallgren, J. ; Hong, Jong Eun ; Yang, Shicai ; Himanen, Olli ; Mikkola, J. ; Van herle, Jan ; Steinberger-Wilckens, Robert. / Ex-situ experimental benchmarking of solid oxide fuel cell metal interconnects. In: Journal of Power Sources. 2019 ; Vol. 437.
@article{98d11ab04351431b949267a4a5c0abda,
title = "Ex-situ experimental benchmarking of solid oxide fuel cell metal interconnects",
abstract = "Solid oxide fuel cells (SOFCs) can convert hydrocarbon fuels, such as methane, into heat and electricity with a high conversion efficiency. The fuel flexibility of the SOFC derives from the high operating temperature (600-900 °C). Such a high temperature stresses the materials used in the SOFC stacks, notably the metals constituting the interconnect (IC). Research centres developed in last twenty years specific alloys and coatings compositions. This led to a vast literature production of solutions to mitigate the degradation of the metals used in SOFC stacks. Unfortunately, the testing method and conditions change from one laboratory to another making the comparison of the results often impossible. This article compares systematically more than sixty different solutions to limit the degradation in the IC. The samples differed for the steel composition, the coating deposition technique, and the coating composition. A modified 4-probe technique and SEM/EDS post-test characterization measure the area specific resistance and chromium retention of the samples. Testing results indicate that i) deposition technique is the most relevant parameter, ii) in presence of coatings, the performances are independent of the type of ferritic stainless steel substrate iii) nitriding helps to limit the outward chromium diffusion in case of porous coatings.",
keywords = "Chromium poisoning, Corrosion evolution, Ferritic stainless, Interconnects, Protective coatings, Solid oxide fuel cell, Steels",
author = "Manuel Bianco and J. Tallgren and Hong, {Jong Eun} and Shicai Yang and Olli Himanen and J. Mikkola and {Van herle}, Jan and Robert Steinberger-Wilckens",
year = "2019",
month = "10",
doi = "10.1016/j.jpowsour.2019.226900",
language = "English",
volume = "437",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

Ex-situ experimental benchmarking of solid oxide fuel cell metal interconnects. / Bianco, Manuel (Corresponding Author); Tallgren, J.; Hong, Jong Eun; Yang, Shicai; Himanen, Olli; Mikkola, J.; Van herle, Jan; Steinberger-Wilckens, Robert.

In: Journal of Power Sources, Vol. 437, 226900, 10.2019.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Ex-situ experimental benchmarking of solid oxide fuel cell metal interconnects

AU - Bianco, Manuel

AU - Tallgren, J.

AU - Hong, Jong Eun

AU - Yang, Shicai

AU - Himanen, Olli

AU - Mikkola, J.

AU - Van herle, Jan

AU - Steinberger-Wilckens, Robert

PY - 2019/10

Y1 - 2019/10

N2 - Solid oxide fuel cells (SOFCs) can convert hydrocarbon fuels, such as methane, into heat and electricity with a high conversion efficiency. The fuel flexibility of the SOFC derives from the high operating temperature (600-900 °C). Such a high temperature stresses the materials used in the SOFC stacks, notably the metals constituting the interconnect (IC). Research centres developed in last twenty years specific alloys and coatings compositions. This led to a vast literature production of solutions to mitigate the degradation of the metals used in SOFC stacks. Unfortunately, the testing method and conditions change from one laboratory to another making the comparison of the results often impossible. This article compares systematically more than sixty different solutions to limit the degradation in the IC. The samples differed for the steel composition, the coating deposition technique, and the coating composition. A modified 4-probe technique and SEM/EDS post-test characterization measure the area specific resistance and chromium retention of the samples. Testing results indicate that i) deposition technique is the most relevant parameter, ii) in presence of coatings, the performances are independent of the type of ferritic stainless steel substrate iii) nitriding helps to limit the outward chromium diffusion in case of porous coatings.

AB - Solid oxide fuel cells (SOFCs) can convert hydrocarbon fuels, such as methane, into heat and electricity with a high conversion efficiency. The fuel flexibility of the SOFC derives from the high operating temperature (600-900 °C). Such a high temperature stresses the materials used in the SOFC stacks, notably the metals constituting the interconnect (IC). Research centres developed in last twenty years specific alloys and coatings compositions. This led to a vast literature production of solutions to mitigate the degradation of the metals used in SOFC stacks. Unfortunately, the testing method and conditions change from one laboratory to another making the comparison of the results often impossible. This article compares systematically more than sixty different solutions to limit the degradation in the IC. The samples differed for the steel composition, the coating deposition technique, and the coating composition. A modified 4-probe technique and SEM/EDS post-test characterization measure the area specific resistance and chromium retention of the samples. Testing results indicate that i) deposition technique is the most relevant parameter, ii) in presence of coatings, the performances are independent of the type of ferritic stainless steel substrate iii) nitriding helps to limit the outward chromium diffusion in case of porous coatings.

KW - Chromium poisoning

KW - Corrosion evolution

KW - Ferritic stainless

KW - Interconnects

KW - Protective coatings

KW - Solid oxide fuel cell

KW - Steels

UR - http://www.scopus.com/inward/record.url?scp=85069830209&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2019.226900

DO - 10.1016/j.jpowsour.2019.226900

M3 - Article

VL - 437

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

M1 - 226900

ER -