Enhancing the Robustness of Brittle Solid Oxide Cell Stack Components

H. L. Frandsen, I. Ritucci, P. Khajavi, B. Talic*, R. Kiebach, P. V. Hendriksen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

For long-term durability and robustness to withstand thermal cycles, the planar solid oxide cell (SOC) stack technologies are challenged by the use of brittle components. With the current trend of increasing the footprint of the SOC stacks, even larger thermal gradients and thermal stresses can be expected. In this overview paper, we present recent advances from our group on improving the fracture energy of three critical materials/interfaces. The fracture energy of the fuel electrode support is increased by ~50 % by tailoring composition and further optimizing the phase transformation toughening. The fracture energy of the air-side contact layer is increased by a factor of ~10 by using metallic pre-cursors that are transformed to spinels through in-situ reactive oxidative bonding. Finally, the fracture energy of the seal-interconnect interface is improved by a factor of 5 by combining an optimized sealing glass with aluminum based coatings for the interconnect.
Original languageEnglish
JournalE C S Transactions
Volume91
Issue number1
Pages (from-to)2201-2211
ISSN1938-5862
DOIs
Publication statusPublished - 2019

Cite this

@article{e721c10e8aef4e509bd53279ebbc9874,
title = "Enhancing the Robustness of Brittle Solid Oxide Cell Stack Components",
abstract = "For long-term durability and robustness to withstand thermal cycles, the planar solid oxide cell (SOC) stack technologies are challenged by the use of brittle components. With the current trend of increasing the footprint of the SOC stacks, even larger thermal gradients and thermal stresses can be expected. In this overview paper, we present recent advances from our group on improving the fracture energy of three critical materials/interfaces. The fracture energy of the fuel electrode support is increased by ~50 {\%} by tailoring composition and further optimizing the phase transformation toughening. The fracture energy of the air-side contact layer is increased by a factor of ~10 by using metallic pre-cursors that are transformed to spinels through in-situ reactive oxidative bonding. Finally, the fracture energy of the seal-interconnect interface is improved by a factor of 5 by combining an optimized sealing glass with aluminum based coatings for the interconnect.",
author = "Frandsen, {H. L.} and I. Ritucci and P. Khajavi and B. Talic and R. Kiebach and Hendriksen, {P. V.}",
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language = "English",
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}

Enhancing the Robustness of Brittle Solid Oxide Cell Stack Components. / Frandsen, H. L.; Ritucci, I.; Khajavi, P.; Talic, B.; Kiebach, R.; Hendriksen, P. V.

In: E C S Transactions, Vol. 91, No. 1, 2019, p. 2201-2211 .

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Enhancing the Robustness of Brittle Solid Oxide Cell Stack Components

AU - Frandsen, H. L.

AU - Ritucci, I.

AU - Khajavi, P.

AU - Talic, B.

AU - Kiebach, R.

AU - Hendriksen, P. V.

PY - 2019

Y1 - 2019

N2 - For long-term durability and robustness to withstand thermal cycles, the planar solid oxide cell (SOC) stack technologies are challenged by the use of brittle components. With the current trend of increasing the footprint of the SOC stacks, even larger thermal gradients and thermal stresses can be expected. In this overview paper, we present recent advances from our group on improving the fracture energy of three critical materials/interfaces. The fracture energy of the fuel electrode support is increased by ~50 % by tailoring composition and further optimizing the phase transformation toughening. The fracture energy of the air-side contact layer is increased by a factor of ~10 by using metallic pre-cursors that are transformed to spinels through in-situ reactive oxidative bonding. Finally, the fracture energy of the seal-interconnect interface is improved by a factor of 5 by combining an optimized sealing glass with aluminum based coatings for the interconnect.

AB - For long-term durability and robustness to withstand thermal cycles, the planar solid oxide cell (SOC) stack technologies are challenged by the use of brittle components. With the current trend of increasing the footprint of the SOC stacks, even larger thermal gradients and thermal stresses can be expected. In this overview paper, we present recent advances from our group on improving the fracture energy of three critical materials/interfaces. The fracture energy of the fuel electrode support is increased by ~50 % by tailoring composition and further optimizing the phase transformation toughening. The fracture energy of the air-side contact layer is increased by a factor of ~10 by using metallic pre-cursors that are transformed to spinels through in-situ reactive oxidative bonding. Finally, the fracture energy of the seal-interconnect interface is improved by a factor of 5 by combining an optimized sealing glass with aluminum based coatings for the interconnect.

U2 - 10.1149/09101.2201ecst

DO - 10.1149/09101.2201ecst

M3 - Journal article

VL - 91

SP - 2201

EP - 2211

JO - E C S Transactions

JF - E C S Transactions

SN - 1938-5862

IS - 1

ER -