Gd0.6Sr0.4Fe0.8Co0.2O3-δ: A novel type of SOFC cathode

Kent Kammer Hansen; Martin Søgaard; Mogens Bjerg Mogensen

doi:10.1149/1.2743140

Gd_0.6Sr_0.4Fe_0.8Co_0.2O_3-δ: A novel type of SOFC cathode

Kent Kammer Hansen
, Martin Søgaard
, Mogens Bjerg Mogensen

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Abstract

The fabrication and electrochemical activity of a type of solid oxide fuel cell (SOFC) cathode is described in this paper. In search of new cathodes a Gd0.6Sr0.4Fe0.8Co0.2O3-delta compound was synthesized using the glycine-nitrate method. It turned out that this was a two-phase compound consisting of two perovskite phases, a cubic and an orthorhombic phase, as shown by Rietveld refinements. These two phases were synthesized and a cone-shaped electrode study was undertaken. It was shown that the composite cathode had an electrochemical activity superior to that of the two single-phase perovskites, indicating that the unique microstructure of this type of cathode is essential for achieving high electrochemical activity toward the reduction of oxygen in a SOFC.

Original language	English
Journal	Electrochemical and Solid-State Letters
Volume	10
Issue number	8
Pages (from-to)	B119-B121
ISSN	1099-0062
DOIs	https://doi.org/10.1149/1.2743140
Publication status	Published - 2007

Bibliographical note

Copyright The Electrochemical Society, Inc. [2007]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

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title = "Gd0.6Sr0.4Fe0.8Co0.2O3-δ: A novel type of SOFC cathode",

abstract = "The fabrication and electrochemical activity of a type of solid oxide fuel cell (SOFC) cathode is described in this paper. In search of new cathodes a Gd0.6Sr0.4Fe0.8Co0.2O3-delta compound was synthesized using the glycine-nitrate method. It turned out that this was a two-phase compound consisting of two perovskite phases, a cubic and an orthorhombic phase, as shown by Rietveld refinements. These two phases were synthesized and a cone-shaped electrode study was undertaken. It was shown that the composite cathode had an electrochemical activity superior to that of the two single-phase perovskites, indicating that the unique microstructure of this type of cathode is essential for achieving high electrochemical activity toward the reduction of oxygen in a SOFC.",

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T1 - Gd0.6Sr0.4Fe0.8Co0.2O3-δ: A novel type of SOFC cathode

AU - Kammer Hansen, Kent

AU - Søgaard, Martin

AU - Mogensen, Mogens Bjerg

N1 - Copyright The Electrochemical Society, Inc. [2007]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

PY - 2007

Y1 - 2007

N2 - The fabrication and electrochemical activity of a type of solid oxide fuel cell (SOFC) cathode is described in this paper. In search of new cathodes a Gd0.6Sr0.4Fe0.8Co0.2O3-delta compound was synthesized using the glycine-nitrate method. It turned out that this was a two-phase compound consisting of two perovskite phases, a cubic and an orthorhombic phase, as shown by Rietveld refinements. These two phases were synthesized and a cone-shaped electrode study was undertaken. It was shown that the composite cathode had an electrochemical activity superior to that of the two single-phase perovskites, indicating that the unique microstructure of this type of cathode is essential for achieving high electrochemical activity toward the reduction of oxygen in a SOFC.

AB - The fabrication and electrochemical activity of a type of solid oxide fuel cell (SOFC) cathode is described in this paper. In search of new cathodes a Gd0.6Sr0.4Fe0.8Co0.2O3-delta compound was synthesized using the glycine-nitrate method. It turned out that this was a two-phase compound consisting of two perovskite phases, a cubic and an orthorhombic phase, as shown by Rietveld refinements. These two phases were synthesized and a cone-shaped electrode study was undertaken. It was shown that the composite cathode had an electrochemical activity superior to that of the two single-phase perovskites, indicating that the unique microstructure of this type of cathode is essential for achieving high electrochemical activity toward the reduction of oxygen in a SOFC.

KW - Brændselsceller og brint

U2 - 10.1149/1.2743140

DO - 10.1149/1.2743140

M3 - Journal article

SN - 1099-0062

VL - 10

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JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 8

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