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Liquid plasma spraying of NiO-YSZ anode layers applicable for SOFC
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SYSNO ASEP 0584163 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Liquid plasma spraying of NiO-YSZ anode layers applicable for SOFC Author(s) Rednyk, Andrii (UFP-V)
Mušálek, Radek (UFP-V) RID, ORCID
Tesař, Tomáš (UFP-V) ORCID
Medřický, Jan (UFP-V) RID
Tsepeleva, A. (CZ)
Lukáč, František (UFP-V) ORCID
Ctibor, Pavel (UFP-V) RID, ORCID
Sedláček, J. (CZ)
Chráska, Tomáš (UFP-V) RID, ORCIDNumber of authors 9 Article number 107855 Source Title Materials Today Communications. - : Elsevier - ISSN 2352-4928
Roč. 38, March (2024)Number of pages 14 s. Language eng - English Country NL - Netherlands Keywords Electrical resistance ; Microstructure ; NiO-YSZ anode ; Porosity ; SOFC, Liquid plasma spraying Subject RIV JP - Industrial Processing OECD category Materials engineering R&D Projects GA22-21478S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UFP-V - RVO:61389021 UT WOS 001149072900001 EID SCOPUS 85180936511 DOI 10.1016/j.mtcomm.2023.107855 Annotation Plasma spraying (PS) from liquid feedstocks is a promising alternative for fabricating the NiO-YSZ anodes for Solid Oxide Fuel Cell (SOFC). However, despite the inherent advantages of the PS process, the plasma sprayed anodes are still inferior to the conventional ones prepared by wet-ceramic techniques due to the difficulty of achieving the optimal porosity level. This study shows that due to recent development, the NiO-YSZ anode layers with desirable porosity and microstructure can now be effectively fabricated in a one-step process using PS equipment with a water-argon stabilized plasma torch. As a liquid feedstock, we utilized Ni nitrate (hexahydrate) solutions and YSZ suspensions with different ratios, using ethanol or water as solvents. We show that the ethanol-based feedstock provides a favorable microstructure and porosity of the resulted layers over the water-based one. In addition, apart from NiO and YSZ phases, the layers deposited with ethanol solvent contained even metallic Ni. Different ratios of Ni nitrate to YSZ in ethanol-based feedstocks greatly affected the layer's characteristics - when the content of Ni nitrate was high, the resulting layers had a non-uniform morphology with a very porous microstructure. On the contrary, the equal contents of Ni nitrate and YSZ in the feedstock resulted in the most optimal layer's microstructure, chemical composition, and thus sufficient electrical resistance, making such material potentially useful as anode for SOFC. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2024 Electronic address https://www.sciencedirect.com/science/article/pii/S2352492823025461?via%3Dihub
Number of the records: 1