Amaya Dueñas, Diana María ; Chen, Guoxing ; Weidenkaff, Anke ; Sata, Noriko ; Han, Feng ; Schiller, Guenter ; Costa, Rémi ; Friedrich, Andreas K. (2019)
Synthesis and Evaluation of the A-Site Deficient Perovskite La0.65Sr0.3Cr0.85Ni0.15O3-δ as Fuel Electrode for High Temperature Co-Electrolysis Enhanced by In Situ Exsolution of Ni Nanoparticles.
In: ECS Transactions, 91 (1)
doi: 10.1149/09101.1751ecst
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Lanthanum strontium chromite (LSC) perovskite partially doped with 15% of Ni on the B-site as reducible transition metal was investigated with the aim to perform in situ exsolution under reducing conditions. A-site deficient compounds were formulated to enhance the exsolution of the electrocatalyst. Single phase is achieved with the formulation La0.65Sr0.3Cr0.85Ni0.15O3-δ (L65SCN) and has been characterized by X-ray diffraction (XRD), Rietveld refinement and scanning electron microscopy (SEM). Exsolution was investigated under reducing conditions in which Ni exsolution was confirmed. Such electrocatalyst was implemented into an electrolyte-supported-cell (ESC) for early electrochemical investigation. Cells were manufactured by screen printing of composite L65SCN/CGO as fuel electrode and La0.58Sr0.4Fe0.8Co0.2O3-δ (LSCF) as air electrode on CGO-3YSZ-CGO substrates. These cells were characterized in steam electrolysis at 930°C by Electrochemical Impedance Spectroscopy (EIS). Further microstructural engineering and fine tuning of the manufacturing parameters are essential for a practical use of this electroctalyst for H2O/CO2 co-electrolysis operation.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Amaya Dueñas, Diana María ; Chen, Guoxing ; Weidenkaff, Anke ; Sata, Noriko ; Han, Feng ; Schiller, Guenter ; Costa, Rémi ; Friedrich, Andreas K. |
| Art des Eintrags: | Bibliographie |
| Titel: | Synthesis and Evaluation of the A-Site Deficient Perovskite La0.65Sr0.3Cr0.85Ni0.15O3-δ as Fuel Electrode for High Temperature Co-Electrolysis Enhanced by In Situ Exsolution of Ni Nanoparticles |
| Sprache: | Englisch |
| Publikationsjahr: | 10 Juli 2019 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ECS Transactions |
| Jahrgang/Volume einer Zeitschrift: | 91 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1149/09101.1751ecst |
| URL / URN: | https://doi.org/10.1149/09101.1751ecst |
| Kurzbeschreibung (Abstract): | Lanthanum strontium chromite (LSC) perovskite partially doped with 15% of Ni on the B-site as reducible transition metal was investigated with the aim to perform in situ exsolution under reducing conditions. A-site deficient compounds were formulated to enhance the exsolution of the electrocatalyst. Single phase is achieved with the formulation La0.65Sr0.3Cr0.85Ni0.15O3-δ (L65SCN) and has been characterized by X-ray diffraction (XRD), Rietveld refinement and scanning electron microscopy (SEM). Exsolution was investigated under reducing conditions in which Ni exsolution was confirmed. Such electrocatalyst was implemented into an electrolyte-supported-cell (ESC) for early electrochemical investigation. Cells were manufactured by screen printing of composite L65SCN/CGO as fuel electrode and La0.58Sr0.4Fe0.8Co0.2O3-δ (LSCF) as air electrode on CGO-3YSZ-CGO substrates. These cells were characterized in steam electrolysis at 930°C by Electrochemical Impedance Spectroscopy (EIS). Further microstructural engineering and fine tuning of the manufacturing parameters are essential for a practical use of this electroctalyst for H2O/CO2 co-electrolysis operation. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Werkstofftechnik und Ressourcenmanagement |
| Hinterlegungsdatum: | 20 Mai 2020 06:56 |
| Letzte Änderung: | 22 Mai 2020 08:23 |
| PPN: | |
| Projekte: | The German Academic Exchange Service (DAAD) is acknowledged for the Ph.D. scholarship of Mrs. D.M. Amaya D., Part of this work has received support from the German Federal Ministry of Education and Research (BMBF) within the Kopernikus Project P2X (Grant n°03SFKE20). |
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