Porous La0.6Sr0.4CoO3-δ thin film cathodes for large area micro solid oxide fuel cell power generators

A. Garbayo, Vincenzo Esposito, Simone Sanna, A. Morata, D. Pla, L. Fonseca, N. Sabaté

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Porous La0.6Sr0.4CoO3-δ thin films were fabricated by pulsed laser deposition for being used as a cathode for micro solid oxide fuel cell applications as MEMS power generators. Symmetrical La0.6Sr0.4CoO3-δ/ yttria-stabilized zirconia/La0.6Sr0.4CoO3-δ free-standing membranes were fabricated using silicon as a substrate. A novel large-area membrane design based on grids of doped-silicon slabs was used. Thermomechanical stability of the tri-layer membranes was ensured in the intermediate range of temperatures up to 700 °C. In-plane conductivity of ca. 300 S cm-1 was measured for the cathode within the whole range of application temperatures. Finally, area specific resistance values below 0.3 Ω cm2 were measured for the cathode/electrolyte bi-layer at 700 °C in the exact final micro solid oxide fuel cell device configuration, thus presenting La0.6Sr0.4CoO3 as a good alternative for fabricating reliable micro solid oxide fuel cells for intermediate temperature applications.
© 2013 Elsevier B.V. All rights reserved.

Original languageEnglish
JournalJournal of Power Sources
Volume248
Pages (from-to)1042-1049
ISSN0378-7753
DOIs
Publication statusPublished - 2014

Keywords

  • Micro solid oxide fuel cell
  • Thin film cathode
  • Self-supported electrolyte
  • Lanthanum strontium cobaltite
  • Microelectromechanical systems

Cite this

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title = "Porous La0.6Sr0.4CoO3-δ thin film cathodes for large area micro solid oxide fuel cell power generators",
abstract = "Porous La0.6Sr0.4CoO3-δ thin films were fabricated by pulsed laser deposition for being used as a cathode for micro solid oxide fuel cell applications as MEMS power generators. Symmetrical La0.6Sr0.4CoO3-δ/ yttria-stabilized zirconia/La0.6Sr0.4CoO3-δ free-standing membranes were fabricated using silicon as a substrate. A novel large-area membrane design based on grids of doped-silicon slabs was used. Thermomechanical stability of the tri-layer membranes was ensured in the intermediate range of temperatures up to 700 °C. In-plane conductivity of ca. 300 S cm-1 was measured for the cathode within the whole range of application temperatures. Finally, area specific resistance values below 0.3 Ω cm2 were measured for the cathode/electrolyte bi-layer at 700 °C in the exact final micro solid oxide fuel cell device configuration, thus presenting La0.6Sr0.4CoO3-δ as a good alternative for fabricating reliable micro solid oxide fuel cells for intermediate temperature applications. {\circledC} 2013 Elsevier B.V. All rights reserved.",
keywords = "Micro solid oxide fuel cell, Thin film cathode, Self-supported electrolyte, Lanthanum strontium cobaltite, Microelectromechanical systems",
author = "A. Garbayo and Vincenzo Esposito and Simone Sanna and A. Morata and D. Pla and L. Fonseca and N. Sabat{\'e}",
year = "2014",
doi = "10.1016/j.jpowsour.2013.10.038",
language = "English",
volume = "248",
pages = "1042--1049",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

Porous La0.6Sr0.4CoO3-δ thin film cathodes for large area micro solid oxide fuel cell power generators. / Garbayo, A.; Esposito, Vincenzo; Sanna, Simone; Morata, A.; Pla, D.; Fonseca, L.; Sabaté, N.

In: Journal of Power Sources, Vol. 248, 2014, p. 1042-1049.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Porous La0.6Sr0.4CoO3-δ thin film cathodes for large area micro solid oxide fuel cell power generators

AU - Garbayo, A.

AU - Esposito, Vincenzo

AU - Sanna, Simone

AU - Morata, A.

AU - Pla, D.

AU - Fonseca, L.

AU - Sabaté, N.

PY - 2014

Y1 - 2014

N2 - Porous La0.6Sr0.4CoO3-δ thin films were fabricated by pulsed laser deposition for being used as a cathode for micro solid oxide fuel cell applications as MEMS power generators. Symmetrical La0.6Sr0.4CoO3-δ/ yttria-stabilized zirconia/La0.6Sr0.4CoO3-δ free-standing membranes were fabricated using silicon as a substrate. A novel large-area membrane design based on grids of doped-silicon slabs was used. Thermomechanical stability of the tri-layer membranes was ensured in the intermediate range of temperatures up to 700 °C. In-plane conductivity of ca. 300 S cm-1 was measured for the cathode within the whole range of application temperatures. Finally, area specific resistance values below 0.3 Ω cm2 were measured for the cathode/electrolyte bi-layer at 700 °C in the exact final micro solid oxide fuel cell device configuration, thus presenting La0.6Sr0.4CoO3-δ as a good alternative for fabricating reliable micro solid oxide fuel cells for intermediate temperature applications. © 2013 Elsevier B.V. All rights reserved.

AB - Porous La0.6Sr0.4CoO3-δ thin films were fabricated by pulsed laser deposition for being used as a cathode for micro solid oxide fuel cell applications as MEMS power generators. Symmetrical La0.6Sr0.4CoO3-δ/ yttria-stabilized zirconia/La0.6Sr0.4CoO3-δ free-standing membranes were fabricated using silicon as a substrate. A novel large-area membrane design based on grids of doped-silicon slabs was used. Thermomechanical stability of the tri-layer membranes was ensured in the intermediate range of temperatures up to 700 °C. In-plane conductivity of ca. 300 S cm-1 was measured for the cathode within the whole range of application temperatures. Finally, area specific resistance values below 0.3 Ω cm2 were measured for the cathode/electrolyte bi-layer at 700 °C in the exact final micro solid oxide fuel cell device configuration, thus presenting La0.6Sr0.4CoO3-δ as a good alternative for fabricating reliable micro solid oxide fuel cells for intermediate temperature applications. © 2013 Elsevier B.V. All rights reserved.

KW - Micro solid oxide fuel cell

KW - Thin film cathode

KW - Self-supported electrolyte

KW - Lanthanum strontium cobaltite

KW - Microelectromechanical systems

U2 - 10.1016/j.jpowsour.2013.10.038

DO - 10.1016/j.jpowsour.2013.10.038

M3 - Journal article

VL - 248

SP - 1042

EP - 1049

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -