0
Research Papers

Electrochemical Behavior of Metal-Supported SOFCs Under High Fuel Utilization and Their Durability

[+] Author and Article Information
I. Antepara

 Ikerlan- Energía, Parque Tecnológico de Álava, Juan de La Cierva,1 E-01510, Miñano, Álava, Spaininigoantepara@hotmail.com

L. Diaz, M. Rivas, L. Otaegi, N. Gomez, I. Villarreal, A. Laresgoiti

 Ikerlan- Energía, Parque Tecnológico de Álava, Juan de La Cierva,1 E-01510, Miñano, Álava, Spain

J. Fuel Cell Sci. Technol 9(2), 021009 (Mar 19, 2012) (8 pages) doi:10.1115/1.4005616 History: Received April 03, 2011; Accepted November 23, 2011; Published March 09, 2012; Online March 19, 2012

The aim of this project was to study whether the oxidation resistance of cells is affected while working under high fuel utilization. A previous study measured the weak oxidation resistance for very porous samples (measured porosity ∼ 70%) in H2 with high H2 O content (over 50%) in the interval from 600 to 800 °C. Thus, additional tests were carried out with cells. Crofer22APU-supported solid oxide fuel cells (SOFCs) were produced by scalable cost competitive routes. One of the highly porous cells (calculated porosity 45%) was run under high fuel utilization conditions (calculated fuel utilization 56%), and a further two in H2 -50%H2 O. Another cell, with low porosity (calculated porosity 20%), was kept working in the same H2 -50%H2 O atmosphere for many hours. Durability tests with cells of different porosities confirmed that this is the main variable concerning degradation issues while working under high fuel utilization.

FIGURES IN THIS ARTICLE
<>
Copyright © 2012 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

I-V performance of a tubular metal-supported cell tested under different H2 flows

Grahic Jump Location
Figure 2

Degradation curves for a tubular metal-supported SOFC tested at 800 °C under high FU

Grahic Jump Location
Figure 3

SEM image of a cross section of the cell working at 800 °C at high FU

Grahic Jump Location
Figure 4

SEM image of a cross section of the porous sample oxidized at 850 °C in H2 -50%H2 O

Grahic Jump Location
Figure 5

Voltage curve for a tubular metal-supported SOFC tested at 800 °C in H2 -50%H2 O at a constant current density of 100 mA/cm2

Grahic Jump Location
Figure 6

SEM image of a cross section of the cell working at 800 °C in H2 -50%H2 O

Grahic Jump Location
Figure 7

FLUENT model of a cell, oven temperature 800 °C and fuel H2 -3%H2 O. Contours of mole fraction of H2 O

Grahic Jump Location
Figure 8

FLUENT model of a cell, oven temperature 800 °C and fuel H2 -3%H2 O. Contours of temperature.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In