Szczegóły publikacji
Opis bibliograficzny
Novel OER/ORR electrocatalysts based on high-entropy perovskites with 3d/4d/5d dopants / Klaudia ZIELIŃSKA, Juliusz DĄBROWA, Marek ZAJUSZ, Miłosz KOŻUSZNIK, Konrad ŚWIERCZEK // Catalysts [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2073-4344 . — 2026 — vol. 16 iss. 2 art. no. 192, s. 1–20. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 18–20, Abstr. — Publikacja dostępna online od: 2026-02-18. — K. Świerczek - dod. afiliacja: AGH CE
Autorzy (5)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 166287 |
|---|---|
| Data dodania do BaDAP | 2026-03-13 |
| Tekst źródłowy | URL |
| DOI | 10.3390/catal16020192 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Catalysts |
Abstract
In this study, the feasibility of a new group of alkali-free high-entropy ABO3-δ perovskite cathodes, in which the B-site is occupied by a mixture of 3d and 4d/5d elements, is examined. Six different materials with a general formula of La(Cu0.2Ni0.2X10.2X20.2Y10.2)O3-δ (where X1, X2 = mixture of two Co, Ga, Fe, and Y1 = one of Nb/Ta): La(Cu0.2Ni0.2Co0.2Ga0.2Nb0.2)O3-δ, La(Cu0.2Ni0.2Co0.2Ga0.2Ta0.2)O3-δ, La(Cu0.2Ni0.2Fe0.2Ga0.2-Nb0.2)O3-δ, La(Cu0.2Ni0.2Fe0.2Ga0.2-Ta0.2)O3-δ, La(Cu0.2Ni0.2Co0.2Fe0.2Nb0.2)O3-δ, La(Cu0.2Ni0.2Co0.2Fe0.2Ta0.2)O3-δ were synthesized, with five of them possessing a single-phase, Pnma perovskite structure. While in the case of the basic properties, such as electrical conductivity or thermomechanical behavior, the studied oxides show a number of similarities, the differences between them become more apparent when low-temperature Oxygen Evolution Reaction (OER) and high-temperature Oxygen Reduction Reaction performance is evaluated. The overall best performance is achieved by La(Cu0.2Ni0.2Co0.2Fe0.2Nb0.2)O3-δ and La(Cu0.2Ni0.2Co0.2Fe0.2Ta0.2)O3-δ compositions, with the former offering slightly faster OER kinetics, and the latter exhibiting superior polarization resistance as an SOFC cathode. Overall, the materials exhibit a strong correlation between composition and properties, with potential for further development into non-equimolar compositions of superior performance.
