Current distribution analysis of a microtubular solid oxide fuel cell with surface temperature measurements

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Current distribution of a practical solid oxide fuel cell (SOFC) has been analyzed from a thermal analysis combined with surface temperature measurements. Electrochemical impedance spectroscopy with two-electrode set-up is employed on an anode-supported microtubular SOFC. This cell is an intermediate temperature SOFC composed of Ni/(ZrO 2) 0.9(Y 2O 3) 0.1 cermet anode, La 0.8Sr 0.2Ga 0.8Mg 0.2O 2.8 electrolyte, and (La 0.6SrO 4)(Co 0.2Fe 0.8)O 3 cathode. The impedance spectra give the resistances at the anode and cathode and the cell ohmic resistance. By numerically integrating these resistances, overpotentials are evaluated. The overpotentials and the single electrode (electrochemical) Peltier heats at the anode and cathode provide individual heat production rates. Since the energy balance equations incorporating these heat production rates determined by current yield the surface temperatures of the cell, local current densities are obtained so that the calculated and measured temperatures by thermocouples at several positions in the anode and cathode surfaces coincide.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 12, SOFC XII
Pages1087-1096
Number of pages10
Edition2 PART 2
DOIs
Publication statusPublished - Dec 1 2011
Event12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada
Duration: May 1 2011May 6 2011

Publication series

NameECS Transactions
Number2 PART 2
Volume35
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
CountryCanada
CityMontreal, QC
Period5/1/115/6/11

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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