Composite cathode of perovskite-related oxides, (La,Sr) CoO 3-δ/ (La,Sr)2 CoO4-δ, for solid oxide fuel cells

Keiji Yashiro; Takashi Nakamura; Maya Sase; Florian Hermes; Kazuhisa Sato; Tatsuya Kawada; Junichiro Mizusaki

doi:10.1149/1.3170903

Composite cathode of perovskite-related oxides, (La,Sr) CoO _3-δ/ (La,Sr)₂ CoO_4-δ, for solid oxide fuel cells

Keiji Yashiro, Takashi Nakamura, Maya Sase, Florian Hermes, Kazuhisa Sato, Tatsuya Kawada, Junichiro Mizusaki

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

The heterointerface electrode, porous LaSrCoO_4-δ on porous La_0.6 Sr_0.4 CoO_3-δ, was examined by an ac impedance analysis. The performance of the heterointerface electrode was higher than those of LaSrCo O4-δ and La_0.6 Sr_0.4 CoO_3-δ. The better performance is attributed to the enhancement of oxygen surface reaction at the heterointerface of LaSrCo O4-δ and La_0.6 Sr_0.4 CoO_3-δ. The results are consistent with high surface exchange coefficients at the heterointerface between LaSrCoO_4-δ and La_0.6 Sr_0.4 CoO_3-δ, which were determined by oxygen isotope diffusion experiment.

Original language	English
Pages (from-to)	B135-B137
Journal	Electrochemical and Solid-State Letters
Volume	12
Issue number	9
DOIs	https://doi.org/10.1149/1.3170903
Publication status	Published - 2009

ASJC Scopus subject areas

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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title = "Composite cathode of perovskite-related oxides, (La,Sr) CoO 3-δ/ (La,Sr)2 CoO4-δ, for solid oxide fuel cells",

abstract = "The heterointerface electrode, porous LaSrCoO4-δ on porous La0.6 Sr0.4 CoO3-δ, was examined by an ac impedance analysis. The performance of the heterointerface electrode was higher than those of LaSrCo O4-δ and La0.6 Sr0.4 CoO3-δ. The better performance is attributed to the enhancement of oxygen surface reaction at the heterointerface of LaSrCo O4-δ and La0.6 Sr0.4 CoO3-δ. The results are consistent with high surface exchange coefficients at the heterointerface between LaSrCoO4-δ and La0.6 Sr0.4 CoO3-δ, which were determined by oxygen isotope diffusion experiment.",

author = "Keiji Yashiro and Takashi Nakamura and Maya Sase and Florian Hermes and Kazuhisa Sato and Tatsuya Kawada and Junichiro Mizusaki",

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T1 - Composite cathode of perovskite-related oxides, (La,Sr) CoO 3-δ/ (La,Sr)2 CoO4-δ, for solid oxide fuel cells

AU - Yashiro, Keiji

AU - Nakamura, Takashi

AU - Sase, Maya

AU - Hermes, Florian

AU - Sato, Kazuhisa

AU - Kawada, Tatsuya

AU - Mizusaki, Junichiro

PY - 2009

Y1 - 2009

N2 - The heterointerface electrode, porous LaSrCoO4-δ on porous La0.6 Sr0.4 CoO3-δ, was examined by an ac impedance analysis. The performance of the heterointerface electrode was higher than those of LaSrCo O4-δ and La0.6 Sr0.4 CoO3-δ. The better performance is attributed to the enhancement of oxygen surface reaction at the heterointerface of LaSrCo O4-δ and La0.6 Sr0.4 CoO3-δ. The results are consistent with high surface exchange coefficients at the heterointerface between LaSrCoO4-δ and La0.6 Sr0.4 CoO3-δ, which were determined by oxygen isotope diffusion experiment.

AB - The heterointerface electrode, porous LaSrCoO4-δ on porous La0.6 Sr0.4 CoO3-δ, was examined by an ac impedance analysis. The performance of the heterointerface electrode was higher than those of LaSrCo O4-δ and La0.6 Sr0.4 CoO3-δ. The better performance is attributed to the enhancement of oxygen surface reaction at the heterointerface of LaSrCo O4-δ and La0.6 Sr0.4 CoO3-δ. The results are consistent with high surface exchange coefficients at the heterointerface between LaSrCoO4-δ and La0.6 Sr0.4 CoO3-δ, which were determined by oxygen isotope diffusion experiment.

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Composite cathode of perovskite-related oxides, (La,Sr) CoO _3-δ/ (La,Sr)₂ CoO_4-δ, for solid oxide fuel cells

Abstract

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