Physical Properties of Mixed Conductor Solid Oxide Fuel Cell Anodes of Doped CeO2

Mogens Bjerg Mogensen; Thomas Lindegaard; Uffe Rud Hansen; Gurli Mogensen

doi:10.1149/1.2055072

Physical Properties of Mixed Conductor Solid Oxide Fuel Cell Anodes of Doped CeO₂

Mogens Bjerg Mogensen
, Thomas Lindegaard
, Uffe Rud Hansen
, Gurli Mogensen

Technical University of Denmark
Haldor Topsoe AS

Research output: Contribution to journal › Journal article › Research › peer-review

1397 Downloads (Orbit)

Abstract

Samples of CeO2 doped with oxides such as CaO and Gd2O3 were prepared. Their conductivities and expansions onreduction were measured at 1000°C, and the thermal expansion coefficients in the range 50 to 1000°C were determined. Theionic and electronic conductivity were derived from curves of total conductivity vs. oxygen partial pressure. For both typesof conductivity a dependence on dopant valency was observed. The electronic conductivity was independent of dopantradius in contrast to the ionic which was highly dependent. These measured physical properties are compared with the idealrequirements for solid oxide fuel cell anodes. Not all requirements are fulfilled. Measures to compensate for this arediscussed.

Original language	English
Journal	Journal of The Electrochemical Society
Volume	141
Issue number	8
Pages (from-to)	2122-2128
ISSN	0013-4651
DOIs	https://doi.org/10.1149/1.2055072
Publication status	Published - 1994

Bibliographical note

Copyright The Electrochemical Society, Inc. [1994]. 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).

Access to Document

10.1149/1.2055072

GurliFinal published version, 781 KB

OpenUrl availability

Check availability in DTU Findit

Cite this

@article{6c6cb61be3e145be9f9ac10b6466b6d3,

title = "Physical Properties of Mixed Conductor Solid Oxide Fuel Cell Anodes of Doped CeO2",

abstract = "Samples of CeO2 doped with oxides such as CaO and Gd2O3 were prepared. Their conductivities and expansions onreduction were measured at 1000°C, and the thermal expansion coefficients in the range 50 to 1000°C were determined. Theionic and electronic conductivity were derived from curves of total conductivity vs. oxygen partial pressure. For both typesof conductivity a dependence on dopant valency was observed. The electronic conductivity was independent of dopantradius in contrast to the ionic which was highly dependent. These measured physical properties are compared with the idealrequirements for solid oxide fuel cell anodes. Not all requirements are fulfilled. Measures to compensate for this arediscussed.",

author = "Mogensen, \{Mogens Bjerg\} and Thomas Lindegaard and Hansen, \{Uffe Rud\} and Gurli Mogensen",

note = "Copyright The Electrochemical Society, Inc. [1994]. 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).",

year = "1994",

doi = "10.1149/1.2055072",

language = "English",

volume = "141",

pages = "2122--2128",

journal = "Journal of The Electrochemical Society",

issn = "0013-4651",

publisher = "Institute of Physics",

number = "8",

}

TY - JOUR

T1 - Physical Properties of Mixed Conductor Solid Oxide Fuel Cell Anodes of Doped CeO2

AU - Mogensen, Mogens Bjerg

AU - Lindegaard, Thomas

AU - Hansen, Uffe Rud

AU - Mogensen, Gurli

N1 - Copyright The Electrochemical Society, Inc. [1994]. 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 - 1994

Y1 - 1994

N2 - Samples of CeO2 doped with oxides such as CaO and Gd2O3 were prepared. Their conductivities and expansions onreduction were measured at 1000°C, and the thermal expansion coefficients in the range 50 to 1000°C were determined. Theionic and electronic conductivity were derived from curves of total conductivity vs. oxygen partial pressure. For both typesof conductivity a dependence on dopant valency was observed. The electronic conductivity was independent of dopantradius in contrast to the ionic which was highly dependent. These measured physical properties are compared with the idealrequirements for solid oxide fuel cell anodes. Not all requirements are fulfilled. Measures to compensate for this arediscussed.

AB - Samples of CeO2 doped with oxides such as CaO and Gd2O3 were prepared. Their conductivities and expansions onreduction were measured at 1000°C, and the thermal expansion coefficients in the range 50 to 1000°C were determined. Theionic and electronic conductivity were derived from curves of total conductivity vs. oxygen partial pressure. For both typesof conductivity a dependence on dopant valency was observed. The electronic conductivity was independent of dopantradius in contrast to the ionic which was highly dependent. These measured physical properties are compared with the idealrequirements for solid oxide fuel cell anodes. Not all requirements are fulfilled. Measures to compensate for this arediscussed.

U2 - 10.1149/1.2055072

DO - 10.1149/1.2055072

M3 - Journal article

SN - 0013-4651

VL - 141

SP - 2122

EP - 2128

JO - Journal of The Electrochemical Society

JF - Journal of The Electrochemical Society

IS - 8

ER -