Evaluation method of current distribution in SOFC in operation

T. Tsuchikura, T. Sakamoto, T. Zukawa, H. Sumi, K. Sato, K. Yashiro, T. Hashida, T. Kawada

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


A method was developed to estimate local current in an SOFC. Lateral potential profile on a current collector plane was measured using multiple probes, and the local current was estimated as the second derivative of the potential. This concept was successfully demonstrated by experiments measuring 1-dimensional current distribution on a small tubular cell. The condition for the measurement was optimized according to the ratio of resistance on the interconnect to that through the cell. The same concept was applied to a planar single cell flowing current diagonally on the top and bottom plates. Numerical estimation revealed that the 2-dimensional current distribution can be roughly estimated from the measurement of potential on the edges of the interconnect plates. Furthermore, the potential on the current collector was found to be a good indicator of internal current in a cell upon transient operations.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 16, SOFC 2019
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society Inc.
Number of pages10
ISBN (Electronic)9781607688747, 9781607688747
Publication statusPublished - 2019
Event16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019 - Kyoto, Japan
Duration: 2019 Sep 82019 Sep 13

Publication series

NameECS Transactions
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862


Conference16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019

ASJC Scopus subject areas

  • Engineering(all)


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