Reactivating the Ni-YSZ electrode in solid oxide cells and stacks by infiltration

Theis Løye Skafte*, Johan Hjelm, Peter Blennow Tullmar, Christopher R. Graves

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The solid oxide cell (SOC) could play a vital role in energy storage when the share of intermittent electricity production is high. However, large-scale commercialization of the technology is still hindered by the limited lifetime. Here, we address this issue by examining the potential for repairing various failure and degradation mechanisms occurring in the fuel electrode, thereby extending the potential lifetime of a SOC system. We successfully infiltrated the nickel and yttria-stabilized zirconia cermet electrode in commercial cells with Gd-doped ceria after operation. By this method we fully reactivated the fuel electrode after simulated reactant starvation and after carbon formation. Furthermore, by infiltrating after 900 h of operation, the degradation of the fuel electrode was reduced by a factor of two over the course of 2300 h. Lastly, the scalability of the concept is demonstrated by reactivating an 8-cell stack based on a commercial design.
Original languageEnglish
JournalJournal of Power Sources
Volume378
Pages (from-to)685-690
ISSN0378-7753
DOIs
Publication statusPublished - 2018

Keywords

  • Infiltration
  • Nickel
  • Gd-doped ceria
  • Carbon
  • Repair
  • Lifetime

Cite this

@article{14d61ca5f95542eebdc4649379f49c67,
title = "Reactivating the Ni-YSZ electrode in solid oxide cells and stacks by infiltration",
abstract = "The solid oxide cell (SOC) could play a vital role in energy storage when the share of intermittent electricity production is high. However, large-scale commercialization of the technology is still hindered by the limited lifetime. Here, we address this issue by examining the potential for repairing various failure and degradation mechanisms occurring in the fuel electrode, thereby extending the potential lifetime of a SOC system. We successfully infiltrated the nickel and yttria-stabilized zirconia cermet electrode in commercial cells with Gd-doped ceria after operation. By this method we fully reactivated the fuel electrode after simulated reactant starvation and after carbon formation. Furthermore, by infiltrating after 900 h of operation, the degradation of the fuel electrode was reduced by a factor of two over the course of 2300 h. Lastly, the scalability of the concept is demonstrated by reactivating an 8-cell stack based on a commercial design.",
keywords = "Infiltration, Nickel, Gd-doped ceria, Carbon, Repair, Lifetime",
author = "Skafte, {Theis L{\o}ye} and Johan Hjelm and {Blennow Tullmar}, Peter and Graves, {Christopher R.}",
year = "2018",
doi = "10.1016/j.jpowsour.2018.01.021",
language = "English",
volume = "378",
pages = "685--690",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

Reactivating the Ni-YSZ electrode in solid oxide cells and stacks by infiltration. / Skafte, Theis Løye; Hjelm, Johan; Blennow Tullmar, Peter; Graves, Christopher R.

In: Journal of Power Sources, Vol. 378, 2018, p. 685-690.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Reactivating the Ni-YSZ electrode in solid oxide cells and stacks by infiltration

AU - Skafte, Theis Løye

AU - Hjelm, Johan

AU - Blennow Tullmar, Peter

AU - Graves, Christopher R.

PY - 2018

Y1 - 2018

N2 - The solid oxide cell (SOC) could play a vital role in energy storage when the share of intermittent electricity production is high. However, large-scale commercialization of the technology is still hindered by the limited lifetime. Here, we address this issue by examining the potential for repairing various failure and degradation mechanisms occurring in the fuel electrode, thereby extending the potential lifetime of a SOC system. We successfully infiltrated the nickel and yttria-stabilized zirconia cermet electrode in commercial cells with Gd-doped ceria after operation. By this method we fully reactivated the fuel electrode after simulated reactant starvation and after carbon formation. Furthermore, by infiltrating after 900 h of operation, the degradation of the fuel electrode was reduced by a factor of two over the course of 2300 h. Lastly, the scalability of the concept is demonstrated by reactivating an 8-cell stack based on a commercial design.

AB - The solid oxide cell (SOC) could play a vital role in energy storage when the share of intermittent electricity production is high. However, large-scale commercialization of the technology is still hindered by the limited lifetime. Here, we address this issue by examining the potential for repairing various failure and degradation mechanisms occurring in the fuel electrode, thereby extending the potential lifetime of a SOC system. We successfully infiltrated the nickel and yttria-stabilized zirconia cermet electrode in commercial cells with Gd-doped ceria after operation. By this method we fully reactivated the fuel electrode after simulated reactant starvation and after carbon formation. Furthermore, by infiltrating after 900 h of operation, the degradation of the fuel electrode was reduced by a factor of two over the course of 2300 h. Lastly, the scalability of the concept is demonstrated by reactivating an 8-cell stack based on a commercial design.

KW - Infiltration

KW - Nickel

KW - Gd-doped ceria

KW - Carbon

KW - Repair

KW - Lifetime

U2 - 10.1016/j.jpowsour.2018.01.021

DO - 10.1016/j.jpowsour.2018.01.021

M3 - Journal article

VL - 378

SP - 685

EP - 690

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -