Design and fabrication of segmented-in-series cells

Tammy S. Lai*, Manoj Pillai, Ilwon Kim, Yi Jiang, Nikkia McDonald, Negar Mansourian, Dan Gostovic, Scott A. Barnett

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

This paper describes design calculations for and experimental fabrication of patterned series-connected solid oxide fuel cells (SOFCs), i.e. the "segmented-in-series" configuration. Losses due to cell resistances, electrode ohmic resistances, interconnect resistance, and shunting by a weakly-conductive support material were considered in the calculation. For any given set of cell dimensions and characteristics, power density was maximized at an optimal cell length. Assuming typical SOFC materials and screen printed layer geometries, optimal cell lengths typically ranged from 1 to 3 mm. Shunting currents increased with decreasing cell lengths, but were found to have little effect on power density assuming partially-stabilized zirconia supports and temperatures ≤ 800°C. Screen printed 4-cell arrays with ceramic interconnects and active cell lengths of 1.1 mm were fabricated, and produced > 0.6 W/cm2 at 800°C. However, OCV values were only ≈ 0.7 V/cell due to porosity in the interconnect; this must be improved to realize good device performance.

Original languageEnglish (US)
Pages333-343
Number of pages11
StatePublished - 2005
Event9th International Symposium on Solid Oxide Fuel Cells, SOFC IX - Quebec, Canada
Duration: May 15 2005May 20 2005

Other

Other9th International Symposium on Solid Oxide Fuel Cells, SOFC IX
CountryCanada
CityQuebec
Period5/15/055/20/05

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Design and fabrication of segmented-in-series cells'. Together they form a unique fingerprint.

Cite this