Szczegóły publikacji
Opis bibliograficzny
Advanced characterization and functional evaluation of Ni-/Fe-doped Cu–Mn spinels as Co-free coatings for SOFC/SOEC interconnects / Łukasz MAZUR, Kamil DOMARADZKI, Paweł WINIARSKI, Maciej BIK, Andrzej MIKUŁA, Juliusz DĄBROWA, Grzegorz CEMPURA, Anna ADAMCZYK, Adam KRUK, Tomasz BRYLEWSKI // Journal of Materials Chemistry . A ; ISSN 2050-7488. — 2025 — vol. 13 iss. 38, s. 32741–32764. — Bibliogr. s. 32763–32764, Abstr. — Publikacja dostępna online od: 2025-09-02
Autorzy (10)
Dane bibliometryczne
| ID BaDAP | 163456 |
|---|---|
| Data dodania do BaDAP | 2025-10-16 |
| Tekst źródłowy | URL |
| DOI | 10.1039/D5TA04138D |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of Materials Chemistry, A |
Abstract
To develop Co-free, high-performance coatings for SOEC/SOFC interconnects, Ni- and Fe-doped Cu1.3Mn1.7O4 spinels were synthesized via an EDTA-assisted gel method and applied onto low-chromium ferritic steel via electrophoretic deposition. Ni2+ preferentially substitutes Cu2+ in octahedral positions, increasing lattice parameters and improving electrical conductivity and corrosion resistance, while doping with Fe introduces structural disorder and secondary phases. DFT calculations confirm Ni and Fe's preference for octahedral Cu sites, aligning with experimental XRD, IR, and XAS analyses. Ni-doped spinels, particularly CuMn1.7Ni0.3O4, exhibit enhanced conductivity and thermal stability, and are therefore promising materials for SOEC/SOFC applications. Reactivity studies show reduced Cr2O3 interaction, with CuO segregation observed for 0.1 mol dopants. Long-term oxidation tests demonstrate excellent corrosion resistance and stable ASR values in the 14-20 mΩ cm2 range after 3000 hours at 750 °C, with Ni-doped coatings performing best. Confocal Raman imaging further revealed structural variations and phase distribution within the coating layers, and TEM studies demonstrated the complexity of the coating/steel interface, including the formation of a nanocrystalline Cr2O3 interlayer and progressive chromium diffusion into the spinel lattice. These features suggest a chemically graded, yet structurally coherent interface contributing to long-term coating stability. These findings highlight Ni doping as an effective strategy for optimizing CM spinel coatings for high-temperature electrochemical applications.
