La0.99Co0.4Ni0.6O3−δ–Ce0.8Gd0.2O1.95 as composite cathode for solid oxide fuel cells

Publication: Research - peer-reviewConference article – Annual report year: 2011

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La0.99Co0.4Ni0.6O3−δ–Ce0.8Gd0.2O1.95 as composite cathode for solid oxide fuel cells. / Hjalmarsson, Per; Mogensen, Mogens Bjerg.

In: Journal of Power Sources, Vol. 196, No. 17, 2011, p. 7237-7244.

Publication: Research - peer-reviewConference article – Annual report year: 2011

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Hjalmarsson, Per; Mogensen, Mogens Bjerg / La0.99Co0.4Ni0.6O3−δ–Ce0.8Gd0.2O1.95 as composite cathode for solid oxide fuel cells.

In: Journal of Power Sources, Vol. 196, No. 17, 2011, p. 7237-7244.

Publication: Research - peer-reviewConference article – Annual report year: 2011

Bibtex

@article{46d78423c49945ba8ee335f1d10a3b2a,
title = "La<sub>0.99</sub>Co<sub>0.4</sub>Ni<sub>0.6</sub>O<sub>3−δ</sub>–Ce<sub>0.8</sub>Gd<sub>0.2</sub>O<sub>1.95</sub> as composite cathode for solid oxide fuel cells",
publisher = "Elsevier S.A.",
author = "Per Hjalmarsson and Mogensen, {Mogens Bjerg}",
year = "2011",
doi = "10.1016/j.jpowsour.2010.11.065",
volume = "196",
number = "17",
pages = "7237--7244",
journal = "Journal of Power Sources",
issn = "0378-7753",

}

RIS

TY - CONF

T1 - La<sub>0.99</sub>Co<sub>0.4</sub>Ni<sub>0.6</sub>O<sub>3−δ</sub>–Ce<sub>0.8</sub>Gd<sub>0.2</sub>O<sub>1.95</sub> as composite cathode for solid oxide fuel cells

A1 - Hjalmarsson,Per

A1 - Mogensen,Mogens Bjerg

AU - Hjalmarsson,Per

AU - Mogensen,Mogens Bjerg

PB - Elsevier S.A.

PY - 2011

Y1 - 2011

N2 - We have studied a new composite SOFC cathode consisting of LaCo0.4Ni0.6O3−δ (LCN60) and Ce0.9Gd0.1O1.95 (CGO). The polarisation resistance (RP) at 750°C and OCV was measured to 0.05±0.01Ωcm2 and the activation energy was determined to be about 1eV. The impedance spectra were modelled with an EQC model consisting of a high frequency ZRQ circuit and a medium frequency Gerischer impedance, ZG. The resistance of ZG was found to decrease with approximately a factor of two as a consequence of infiltration of (La0.6Sr0.4)0.99CoO3 into the porous LCN60–CGO structure. RP of both infiltrated and non-infiltrated LCN60–CGO cathodes is substantially lower than that of LSM–YSZ and comparable with single phase LSC cathodes at low T due to its low EA. RP was also found to be stable at 750°C and OCV. The cathodes were integrated onto ScYSZ based anode supported cells which were measured to have an ASR of 0.16–0.18Ωcm2 at 750°C.

AB - We have studied a new composite SOFC cathode consisting of LaCo0.4Ni0.6O3−δ (LCN60) and Ce0.9Gd0.1O1.95 (CGO). The polarisation resistance (RP) at 750°C and OCV was measured to 0.05±0.01Ωcm2 and the activation energy was determined to be about 1eV. The impedance spectra were modelled with an EQC model consisting of a high frequency ZRQ circuit and a medium frequency Gerischer impedance, ZG. The resistance of ZG was found to decrease with approximately a factor of two as a consequence of infiltration of (La0.6Sr0.4)0.99CoO3 into the porous LCN60–CGO structure. RP of both infiltrated and non-infiltrated LCN60–CGO cathodes is substantially lower than that of LSM–YSZ and comparable with single phase LSC cathodes at low T due to its low EA. RP was also found to be stable at 750°C and OCV. The cathodes were integrated onto ScYSZ based anode supported cells which were measured to have an ASR of 0.16–0.18Ωcm2 at 750°C.

KW - Solid Oxide Fuel Cells

U2 - 10.1016/j.jpowsour.2010.11.065

DO - 10.1016/j.jpowsour.2010.11.065

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 17

VL - 196

SP - 7237

EP - 7244

ER -