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Effectiveness of a dual surface modification of metallic interconnects for application in energy conversion devices
Abstract
A dual surface modification of an SOFC metallic interconnect with a Gd2O3 layer and an MnCo2O4 coating was evaluated. The tested samples were oxidized for 7000 h in air at 1073 K. Oxidation products were characterized using XRD, SEM-EDS, and confocal Raman imaging, and ASR was measured. The effect of gadolinium segregation at grain boundaries in Cr2O3 was evaluated using S/TEM-EDS. Area specific-resistance was measured and fuel cell tests investigating electrochemical performance and Cr contamination of electrodes were also performed. The results show that the proposed dual modification was more advantageous than either modification applied separately. The fuel cell tests performed after aging in humidified hydrogen at 1073 K and involving an actual interconnect made of this dual-modified material showed that after 250 h of aging its electrochemical parameters were nearly identical to those of the non-aged reference electrode. Moreover, the modification protected the electrodes from Cr poisoning.
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Authors (7)
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Łukasz Mazur
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics
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Maciej Bik
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics
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Maciej Sitarz
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics
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Aleksander Gil
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics
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Tomasz Brylewski
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.ijhydene.2021.11.256
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
no. 47,
pages 6295 - 6311,
ISSN: 0360-3199 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Mazur Ł., Ignaczak J., Bik M., Molin S., Sitarz M., Gil A., Brylewski T.: Effectiveness of a dual surface modification of metallic interconnects for application in energy conversion devices// INTERNATIONAL JOURNAL OF HYDROGEN ENERGY -Vol. 47,iss. 9 (2022), s.6295-6311
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.ijhydene.2021.11.256
- Sources of funding:
-
- COST_FREE
- Verified by:
- Gdańsk University of Technology
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