Experiments with button-type solid oxide fuel cells using electrochemical impedance spectroscopy to detect carbon formation

Research output: Contribution to journalConference articleScientificpeer-review

Abstract

Carbon deposition is one of the operational problems in hydrocarbon fueled solid oxide fuel cells (SOFCs). Using electrochemical impedance spectroscopy (EIS), experiments are performed to detect carbon formation on button-type cermet Ni-YSZ/YSZ/LSM SOFCs. A mass spectrometer (MS) is used to monitor the outlet gas composition, and the distribution of relaxation times (DRT) is computed to analyse the measured impedance. This work presents preliminary results obtained for H2CH4 mixtures at OCV and 800oC, showing an increase in the mid-frequency range (10-3 and 10-2 s) for methane concentrations exceeding 10 vol%.

Original languageEnglish
Pages (from-to)815-824
JournalECS Transactions
Volume91
Issue number1
DOIs
Publication statusPublished - 2019
EventSOFC 2019: 16th International Symposium on Solid Oxide Fuel Cells - Kyoto, Japan
Duration: 8 Sep 201913 Sep 2019

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