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Microstructure and performance of La0.58Sr0.4Co0.2Fe0.8O3−δ cathodes deposited on BaCe0.2Zr0.7Y0.1O3−δ by infiltration and spray pyrolysis. / Ricote, Sandrine; Bonanos, Nikolaos; Rørvik, Per Martin; Haavik, Camilla.

In: Journal of Power Sources, Vol. 209, 2012, p. 172-179.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Ricote, Sandrine; Bonanos, Nikolaos; Rørvik, Per Martin; Haavik, Camilla / Microstructure and performance of La0.58Sr0.4Co0.2Fe0.8O3−δ cathodes deposited on BaCe0.2Zr0.7Y0.1O3−δ by infiltration and spray pyrolysis.

In: Journal of Power Sources, Vol. 209, 2012, p. 172-179.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{7fdb7f713807420ea699d460bc62ab5d,
title = "Microstructure and performance of La0.58Sr0.4Co0.2Fe0.8O3−δ cathodes deposited on BaCe0.2Zr0.7Y0.1O3−δ by infiltration and spray pyrolysis",
keywords = "BCZY, LSCF, PCFC, Spray pyrolysis, Cathode material, Infiltration",
publisher = "Elsevier S.A.",
author = "Sandrine Ricote and Nikolaos Bonanos and Rørvik, {Per Martin} and Camilla Haavik",
year = "2012",
doi = "10.1016/j.jpowsour.2012.02.090",
volume = "209",
pages = "172--179",
journal = "Journal of Power Sources",
issn = "0378-7753",

}

RIS

TY - JOUR

T1 - Microstructure and performance of La<sub>0.58</sub>Sr<sub>0.4</sub>Co<sub>0.2</sub>Fe<sub>0.8</sub>O<sub>3−δ </sub>cathodes deposited on BaCe<sub>0.2</sub>Zr<sub>0.7</sub>Y<sub>0.1</sub>O<sub>3−δ</sub> by infiltration and spray pyrolysis

A1 - Ricote,Sandrine

A1 - Bonanos,Nikolaos

A1 - Rørvik,Per Martin

A1 - Haavik,Camilla

AU - Ricote,Sandrine

AU - Bonanos,Nikolaos

AU - Rørvik,Per Martin

AU - Haavik,Camilla

PB - Elsevier S.A.

PY - 2012

Y1 - 2012

N2 - La0.58Sr0.4Co0.2Fe0.8O3−δ (LSCF) cathodes have been deposited on proton-conducting BaCe0.2Zr0.7Y0.1O3−δ (BCZY27) electrolyte and studied in symmetric cells to investigate the cathode microstructure and electrochemical performance. Three different types of cathodes have been prepared: two prepared from a solution, infiltrated into a screen-printed BZCY27 porous backbone (4 and 12 infiltrations), and one prepared by spray pyrolysis onto a polished electrolyte. In all three cases, LSCF is obtained after annealing at 700°C for 2h. Analysis of the electrochemical impedance spectra between 450°C and 600°C in air, with varying p(H2O), reveals that the charge transfer contribution is the lowest for the backbone-infiltrated cathode while the oxygen dissociation/adsorption contribution is the lowest for the spray-pyrolyzed cathode. The area specific resistances increase with the water vapor pressure. The area specific resistances obtained are 0.61Ωcm2 and 0.89Ωcm2 at 600°C for the spray-pyrolyzed LSCF cell in dry and humidified air, respectively; the corresponding resistances are 0.63Ωcm2 and 0.98Ωcm2 for the 12 times infiltrated LSCF cell. These resistances are the lowest reported for LSCF cathodes on Ba(Ce,Zr)O3-based electrolytes and show the promise of low-temperature fabrication methods for these systems.

AB - La0.58Sr0.4Co0.2Fe0.8O3−δ (LSCF) cathodes have been deposited on proton-conducting BaCe0.2Zr0.7Y0.1O3−δ (BCZY27) electrolyte and studied in symmetric cells to investigate the cathode microstructure and electrochemical performance. Three different types of cathodes have been prepared: two prepared from a solution, infiltrated into a screen-printed BZCY27 porous backbone (4 and 12 infiltrations), and one prepared by spray pyrolysis onto a polished electrolyte. In all three cases, LSCF is obtained after annealing at 700°C for 2h. Analysis of the electrochemical impedance spectra between 450°C and 600°C in air, with varying p(H2O), reveals that the charge transfer contribution is the lowest for the backbone-infiltrated cathode while the oxygen dissociation/adsorption contribution is the lowest for the spray-pyrolyzed cathode. The area specific resistances increase with the water vapor pressure. The area specific resistances obtained are 0.61Ωcm2 and 0.89Ωcm2 at 600°C for the spray-pyrolyzed LSCF cell in dry and humidified air, respectively; the corresponding resistances are 0.63Ωcm2 and 0.98Ωcm2 for the 12 times infiltrated LSCF cell. These resistances are the lowest reported for LSCF cathodes on Ba(Ce,Zr)O3-based electrolytes and show the promise of low-temperature fabrication methods for these systems.

KW - BCZY

KW - LSCF

KW - PCFC

KW - Spray pyrolysis

KW - Cathode material

KW - Infiltration

U2 - 10.1016/j.jpowsour.2012.02.090

DO - 10.1016/j.jpowsour.2012.02.090

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

VL - 209

SP - 172

EP - 179

ER -