Oxygen Surface Exchange Kinetics of Pr2(Ni,Co)O4+δ Thin-FilmModel Electrodes

Christian Berger, Andreas Egger, Rotraut Merkle, Edith Bucher, Benjamin Stuhlhofer, Nina Schrödl, Judith Lammer, Christian Gspan, Gennady Logvenov, Joachim Maier, Werner Sitte

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

Dense thin-film microelectrodes of the first-order Ruddlesden-Popper phases Pr2NiO4+δ (PNO) and Pr2Ni0.9Co0.1O4+δ (PNCO)were prepared by pulsed laser deposition and photolithographic patterning on yttria-stabilized zirconia (YSZ) substrates. The thinfilmswere characterized by X-ray diffraction, scanning electron microscopy, scanning transmission electron microscopy, inductivelycoupled plasma optical emission spectroscopy, energy dispersive X-ray spectroscopy and electron energy loss spectroscopy. Investigationof the phase stability of PNO and its reactivity with YSZ was performed by X-ray diffraction analyses after high-temperaturetreatment in air. Resistive and capacitive contributions of the individual processes occurring at the microelectrodes were determinedby means of electrochemical impedance spectroscopy at various temperatures (550 ≤ T/°C ≤ 850) and oxygen partial pressures (1 ×10−3 ≤ pO2/bar ≤ 1). Oxygen surface exchange coefficients kq and kchem were calculated from the surface resistances and chemicalcapacitances of the thin-film electrodes. Comparing kq-values of PNO and PNCO shows that substitution of Ni with 10% of Coincreases the oxygen surface exchange rates, especially at lower oxygen partial pressures.© The Author(s) 2019. Published by ECS. This is an open access article distributed under the terms of the Creative CommonsAttribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in anymedium, provided the original work is properly cited. [DOI: 10.1149/2.0521914jes]
Originalspracheenglisch
Seiten (von - bis)F1088-F1095
FachzeitschriftJournal of the Electrochemical Society
Jahrgang166
Ausgabenummer14
DOIs
PublikationsstatusVeröffentlicht - 2019

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Oxygen
Electrodes
Kinetics
Microelectrodes
Yttria stabilized zirconia
Thin films
Partial pressure
X ray diffraction
Surface resistance
Optical emission spectroscopy
Scanning electron microscopy
Phase stability
Electron energy loss spectroscopy
Inductively coupled plasma
Pulsed laser deposition
Electrochemical impedance spectroscopy
Substitution reactions
Capacitance
Transmission electron microscopy
Temperature

ASJC Scopus subject areas

  • !!Materials Science(all)

Fields of Expertise

  • Advanced Materials Science

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

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Oxygen Surface Exchange Kinetics of Pr2(Ni,Co)O4+δ Thin-FilmModel Electrodes. / Berger, Christian; Egger, Andreas; Merkle, Rotraut; Bucher, Edith; Stuhlhofer, Benjamin; Schrödl, Nina; Lammer, Judith; Gspan, Christian; Logvenov, Gennady; Maier, Joachim; Sitte, Werner.

in: Journal of the Electrochemical Society, Jahrgang 166, Nr. 14, 2019, S. F1088-F1095.

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Berger, C, Egger, A, Merkle, R, Bucher, E, Stuhlhofer, B, Schrödl, N, Lammer, J, Gspan, C, Logvenov, G, Maier, J & Sitte, W 2019, 'Oxygen Surface Exchange Kinetics of Pr2(Ni,Co)O4+δ Thin-FilmModel Electrodes' Journal of the Electrochemical Society, Jg. 166, Nr. 14, S. F1088-F1095. https://doi.org/10.1149/2.0521914jes
Berger C, Egger A, Merkle R, Bucher E, Stuhlhofer B, Schrödl N et al. Oxygen Surface Exchange Kinetics of Pr2(Ni,Co)O4+δ Thin-FilmModel Electrodes. Journal of the Electrochemical Society. 2019;166(14):F1088-F1095. https://doi.org/10.1149/2.0521914jes
Berger, Christian ; Egger, Andreas ; Merkle, Rotraut ; Bucher, Edith ; Stuhlhofer, Benjamin ; Schrödl, Nina ; Lammer, Judith ; Gspan, Christian ; Logvenov, Gennady ; Maier, Joachim ; Sitte, Werner. / Oxygen Surface Exchange Kinetics of Pr2(Ni,Co)O4+δ Thin-FilmModel Electrodes. in: Journal of the Electrochemical Society. 2019 ; Jahrgang 166, Nr. 14. S. F1088-F1095.
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abstract = "Dense thin-film microelectrodes of the first-order Ruddlesden-Popper phases Pr2NiO4+δ (PNO) and Pr2Ni0.9Co0.1O4+δ (PNCO) were prepared by pulsed laser deposition and photolithographic patterning on yttria-stabilized zirconia (YSZ) substrates. The thin-films were characterized by X-ray diffraction, scanning electron microscopy, scanning transmission electron microscopy, inductively coupled plasma optical emission spectroscopy, energy dispersive X-ray spectroscopy and electron energy loss spectroscopy. Investigation of the phase stability of PNO and its reactivity with YSZ was performed by X-ray diffraction analyses after high-temperature treatment in air. Resistive and capacitive contributions of the individual processes occurring at the microelectrodes were determined by means of electrochemical impedance spectroscopy at various temperatures (550 ≤ T/°C ≤ 850) and oxygen partial pressures (1 × 10−3 ≤ pO2/bar ≤ 1). Oxygen surface exchange coefficients kq and kchem were calculated from the surface resistances and chemical capacitances of the thin-film electrodes. Comparing kq-values of PNO and PNCO shows that substitution of Ni with 10{\%} of Co increases the oxygen surface exchange rates, especially at lower oxygen partial pressures.",
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AU - Berger, Christian

AU - Egger, Andreas

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AU - Bucher, Edith

AU - Stuhlhofer, Benjamin

AU - Schrödl, Nina

AU - Lammer, Judith

AU - Gspan, Christian

AU - Logvenov, Gennady

AU - Maier, Joachim

AU - Sitte, Werner

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N2 - Dense thin-film microelectrodes of the first-order Ruddlesden-Popper phases Pr2NiO4+δ (PNO) and Pr2Ni0.9Co0.1O4+δ (PNCO) were prepared by pulsed laser deposition and photolithographic patterning on yttria-stabilized zirconia (YSZ) substrates. The thin-films were characterized by X-ray diffraction, scanning electron microscopy, scanning transmission electron microscopy, inductively coupled plasma optical emission spectroscopy, energy dispersive X-ray spectroscopy and electron energy loss spectroscopy. Investigation of the phase stability of PNO and its reactivity with YSZ was performed by X-ray diffraction analyses after high-temperature treatment in air. Resistive and capacitive contributions of the individual processes occurring at the microelectrodes were determined by means of electrochemical impedance spectroscopy at various temperatures (550 ≤ T/°C ≤ 850) and oxygen partial pressures (1 × 10−3 ≤ pO2/bar ≤ 1). Oxygen surface exchange coefficients kq and kchem were calculated from the surface resistances and chemical capacitances of the thin-film electrodes. Comparing kq-values of PNO and PNCO shows that substitution of Ni with 10% of Co increases the oxygen surface exchange rates, especially at lower oxygen partial pressures.

AB - Dense thin-film microelectrodes of the first-order Ruddlesden-Popper phases Pr2NiO4+δ (PNO) and Pr2Ni0.9Co0.1O4+δ (PNCO) were prepared by pulsed laser deposition and photolithographic patterning on yttria-stabilized zirconia (YSZ) substrates. The thin-films were characterized by X-ray diffraction, scanning electron microscopy, scanning transmission electron microscopy, inductively coupled plasma optical emission spectroscopy, energy dispersive X-ray spectroscopy and electron energy loss spectroscopy. Investigation of the phase stability of PNO and its reactivity with YSZ was performed by X-ray diffraction analyses after high-temperature treatment in air. Resistive and capacitive contributions of the individual processes occurring at the microelectrodes were determined by means of electrochemical impedance spectroscopy at various temperatures (550 ≤ T/°C ≤ 850) and oxygen partial pressures (1 × 10−3 ≤ pO2/bar ≤ 1). Oxygen surface exchange coefficients kq and kchem were calculated from the surface resistances and chemical capacitances of the thin-film electrodes. Comparing kq-values of PNO and PNCO shows that substitution of Ni with 10% of Co increases the oxygen surface exchange rates, especially at lower oxygen partial pressures.

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