Szczegóły publikacji
Opis bibliograficzny
Structure and electrical properties of Cu-doped $Mn-Co-O$ spinel prepared via soft chemistry and its application in intermediatetemperature solid oxide fuel cell interconnects / T. BRYLEWSKI, A. KRUK, M. BOBRUK, A. ADAMCZYK, J. PARTYKA, P. RUTKOWSKI // Journal of Power Sources ; ISSN 0378-7753. — 2016 — vol. 333, s. 145–155. — Bibliogr. s. 154–155, Abstr. — Publikacja dostępna online od: 2016-10-03
Autorzy (6)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 101933 |
|---|---|
| Data dodania do BaDAP | 2016-12-12 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jpowsour.2016.09.136 |
| Rok publikacji | 2016 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Power Sources |
Abstract
The study describes CuxMn1.25-0.5xCo1.75-0.5xO4 (x = 0, 0.1, 0.3 and 0.5) spinels synthesized using EDTA gel processes in order to optimize the performance of high-quality spinel protective-conducting films deposited on steel interconnects. The powders obtained after 12 h of calcination in air at 1073 K are solely cubic spinels. Sintering these spinels for 12 h in air at 1423 K also leads to the formation of small amounts of CoO, Mn2O3 or CuO; the type of phase depends on the quantity of copper introduced into the manganese-cobalt lattice. The highest electrical conductivity at 1073 K is observed for Cu0.3Mn1.1Co1.6O4 (162 S·cm−1), which is closely correlated with the lowest activation energy of conduction over the entire temperature range (373≤T≤1073 K); the lowest conductivity is measured for Mn1.25Co1.75O4 (84 S⋅cm−1). The study confirms the suitability of the Cu0.3Mn1.1Co1.6O4 spinel as a potential material for the preparation of protective-conducting coatings on the surface of the DIN 50049 ferritic steel applied in IT-SOFC interconnects. The area-specific resistance of coated steel is 0.08 Ω·cm2, which is lower than that of bare steel after 300 h of oxidation at 1073 K. Cr vaporization tests show that the Cu0.3Mn1.1Co1.6O4 coating is efficient at blocking the outward diffusion of chromium. © 2016 Elsevier B.V.