Journal Article

FZJ-2024-00792

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Interaction between proton conducting BaCe0.2Zr0.7Y0.1O3 electrolyte and structural ceramics during sintering

Schulze-Küppers, F. (Corresponding author)FZJ* ; Duburg, J. C.Extern* ; Deibert, W.FZJ* ; Sohn, Y. J.FZJ* ; Guillon, O.FZJ* ; Sebold, D.FZJ* ; Natour, G.FZJ* ; Meulenberg, W. A.FZJ*

2024
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jeurceramsoc.2023.12.050  doi:10.34734/FZJ-2024-00792

Abstract: The chemical compatibility of thin electrolyte layers and their support materials at high temperatures is crucial for the performance in solid oxide cells and membranes. This work describes the chemical interaction between the electrolyte material, BaCe0.2Zr0.7Y0.1O3 + 0.5 wt% NiO (BCZY), and structural ceramics Al2O3, 8 mol% yttriastabilized zirconia (8YSZ), TiO2, CeO2 and MgO during sintering. 1:1 wt% powder mixtures of the electrolyte material and structural ceramics were annealed at 1500 ◦C for 5 h, with the phase composition being determined through XRD analysis at room temperature. Subsequently, the material interaction between BCZY films depositedon the most promising structural ceramic MgO was investigated by SEM and EDS. In particular, the complex sintering requirements to form single-phase BCZY electrolyte layers is troubled upon coating and sintering BCZY on MgO. Hereby, the diffusion of NiO into the MgO support leads to a deficiency of NiO in the BCZY layer,making the solution and precipitation mechanism required to form the perovskitic phase unable to occur. In extreme scenarios, the electrolyte layer depletion of NiO can even cause the decomposition of a single-phase BCZY into BaZrO3, Ce-Y fluorite and a BCZY perovskite phase of undefined composition.

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Contributing Institute(s):

1. Zentralinstitut für Technologie (ZEA-1)
2. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
3. JARA-ENERGY (JARA-ENERGY)

Research Program(s):

1. 1232 - Power-based Fuels and Chemicals (POF4-123) (POF4-123)
2. Verbundvorhaben PROMETHEUS2018: PROtonen und Sauerstoff ko-ionische Leiter für CO2/H2O Ko-Elektrolyse und Umwandlung zu METhanol und andere Chemikalien für ein nachhaltiges EU-EnergieSystem (03SF0555A) (03SF0555A)
3. 1231 - Electrochemistry for Hydrogen (POF4-123) (POF4-123)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; SCOPUS ; Web of Science Core Collection

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