Interconnect material optimization for low-temperature operation in FCH JU project qSOFC

Carlos Bernuy-Lopez, Laura Rioja-Monllor, Jyrki Mikkola, Markus Rautanen, Simon Hailler, Matti Noponen, Mikael Stenström, Robert Berger, Jörgen Westlinder

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    The optimization of the interconnect material carried out in the EU funded qSOFC project is essential to the mass production of high quality solid oxide fuel cells. Combinations of three different stainless steel grade substrates (Crofer 22H, EN 1.4622 and ASTM 441) together with two different coating compositions (CeCo and CeCoMn) as well as the impact of the use of different lubricants in the forming process have been investigated. The different combinations were exposed at 650 °C in air for more than 3500h and ASR and SEM analysis were conducted. 441 CeCo and Crofer CeCoMn showed the best performance: ASR of 8 and 14 m cm2 respectively after 1000 h. They also showed very good microstructure with the formation of homogenous protective oxide scales.

    Original languageEnglish
    Pages (from-to)2213-2223
    JournalECS Transactions
    Volume91
    Issue number1
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA1 Journal article-refereed
    Event16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019 - Kyoto, Japan
    Duration: 8 Sep 201913 Sep 2019

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