Towards High Power Density Metal Supported Solid Oxide Fuel Cell for Mobile Applications

Jimmi Nielsen*, Åsa H. Persson, Thuy Thanh Muhl, Karen Brodersen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

For use of metal supported solid oxide fuel cell (MS-SOFC) in mobile applications it is important to reduce the thermal mass to enable fast startup, increase stack power density in terms of weight and volume and reduce costs. In the present study, we report on the effect of reducing the Technical University of Denmark (DTU) SoA MS-SOFCs support layer thickness from 313 μm gradually to 108 μm. The support layer thickness decrease in the DTU co-sintering MS-SOFC fabrication route results in an increased densification of the support layer and a slight decrease in performance. To mitigate the performance loss, two different routes for increasing the porosity of the support layer and thus performance were explored. The first route is the introduction of gas channels by puncturing of the green tape casted support layer. The second route is modification of the co-sintering profile. In summary, the cell thickness and thus weight and volume was reduced and the cell power density at 0.7 V at 700°C was increased by 46% to 1.01 Wcm−2 at a fuel utilization of 48%. All modifications were performed on a stack technological relevant cell size of 12 cm × 12 cm.
Original languageEnglish
JournalJournal of the Electrochemical Society
Volume165
Issue number2
Pages (from-to)F90-F96
ISSN0013-4651
DOIs
Publication statusPublished - 2018

Cite this

@article{5bab03dcbfed4f9aa338e7d06479fb15,
title = "Towards High Power Density Metal Supported Solid Oxide Fuel Cell for Mobile Applications",
abstract = "For use of metal supported solid oxide fuel cell (MS-SOFC) in mobile applications it is important to reduce the thermal mass to enable fast startup, increase stack power density in terms of weight and volume and reduce costs. In the present study, we report on the effect of reducing the Technical University of Denmark (DTU) SoA MS-SOFCs support layer thickness from 313 μm gradually to 108 μm. The support layer thickness decrease in the DTU co-sintering MS-SOFC fabrication route results in an increased densification of the support layer and a slight decrease in performance. To mitigate the performance loss, two different routes for increasing the porosity of the support layer and thus performance were explored. The first route is the introduction of gas channels by puncturing of the green tape casted support layer. The second route is modification of the co-sintering profile. In summary, the cell thickness and thus weight and volume was reduced and the cell power density at 0.7 V at 700°C was increased by 46{\%} to 1.01 Wcm−2 at a fuel utilization of 48{\%}. All modifications were performed on a stack technological relevant cell size of 12 cm × 12 cm.",
author = "Jimmi Nielsen and Persson, {Åsa H.} and Muhl, {Thuy Thanh} and Karen Brodersen",
year = "2018",
doi = "10.1149/2.0741802jes",
language = "English",
volume = "165",
pages = "F90--F96",
journal = "Journal of The Electrochemical Society",
issn = "0013-4651",
publisher = "The Electrochemical Society",
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}

Towards High Power Density Metal Supported Solid Oxide Fuel Cell for Mobile Applications. / Nielsen, Jimmi; Persson, Åsa H.; Muhl, Thuy Thanh; Brodersen, Karen.

In: Journal of the Electrochemical Society, Vol. 165, No. 2, 2018, p. F90-F96.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Towards High Power Density Metal Supported Solid Oxide Fuel Cell for Mobile Applications

AU - Nielsen, Jimmi

AU - Persson, Åsa H.

AU - Muhl, Thuy Thanh

AU - Brodersen, Karen

PY - 2018

Y1 - 2018

N2 - For use of metal supported solid oxide fuel cell (MS-SOFC) in mobile applications it is important to reduce the thermal mass to enable fast startup, increase stack power density in terms of weight and volume and reduce costs. In the present study, we report on the effect of reducing the Technical University of Denmark (DTU) SoA MS-SOFCs support layer thickness from 313 μm gradually to 108 μm. The support layer thickness decrease in the DTU co-sintering MS-SOFC fabrication route results in an increased densification of the support layer and a slight decrease in performance. To mitigate the performance loss, two different routes for increasing the porosity of the support layer and thus performance were explored. The first route is the introduction of gas channels by puncturing of the green tape casted support layer. The second route is modification of the co-sintering profile. In summary, the cell thickness and thus weight and volume was reduced and the cell power density at 0.7 V at 700°C was increased by 46% to 1.01 Wcm−2 at a fuel utilization of 48%. All modifications were performed on a stack technological relevant cell size of 12 cm × 12 cm.

AB - For use of metal supported solid oxide fuel cell (MS-SOFC) in mobile applications it is important to reduce the thermal mass to enable fast startup, increase stack power density in terms of weight and volume and reduce costs. In the present study, we report on the effect of reducing the Technical University of Denmark (DTU) SoA MS-SOFCs support layer thickness from 313 μm gradually to 108 μm. The support layer thickness decrease in the DTU co-sintering MS-SOFC fabrication route results in an increased densification of the support layer and a slight decrease in performance. To mitigate the performance loss, two different routes for increasing the porosity of the support layer and thus performance were explored. The first route is the introduction of gas channels by puncturing of the green tape casted support layer. The second route is modification of the co-sintering profile. In summary, the cell thickness and thus weight and volume was reduced and the cell power density at 0.7 V at 700°C was increased by 46% to 1.01 Wcm−2 at a fuel utilization of 48%. All modifications were performed on a stack technological relevant cell size of 12 cm × 12 cm.

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DO - 10.1149/2.0741802jes

M3 - Journal article

VL - 165

SP - F90-F96

JO - Journal of The Electrochemical Society

JF - Journal of The Electrochemical Society

SN - 0013-4651

IS - 2

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