Electrochemical performance and stability of nano-particulate and bi-continuous La1-XSrXCoO3 and Ce0.9Gd0.1O1.95 composite electrodes

Per Hjalmarsson; Jonathan Hallinder; Mogens Bjerg Mogensen

doi:10.1007/s10008-012-1699-2

Electrochemical performance and stability of nano-particulate and bi-continuous La_1-XSr_XCoO₃ and Ce_0.9Gd_0.1O_1.95 composite electrodes

Per Hjalmarsson, Jonathan Hallinder, Mogens Bjerg Mogensen

Department of Energy Conversion and Storage

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

Abstract

A bi-continuous porous cathode consisting of nano-particles of strontium substituted lanthanum cobaltite (LSC) covering the surface of a Ce0.9Gd0.1O1.95 (CGO10) backbone has been produced. The polarization resistance (R (P)) of this cathode was measured to similar to 35 m Omega cm(2) at 650 A degrees C. The area-specific resistance at 650 A degrees C (ASR) when applied onto an anode supported cell (ASC) was found to increase from 540 to 730 m Omega cm(2) when subjected to a thermal cycle to 850 A degrees C. This effect was attributed to particles coarsening but also to a reaction with the electrolyte. The results imply that a CGO10 barrier is required for this type of nano-structured cathode.

Original language	English
Journal	Journal of Solid State Electrochemistry
Volume	16
Issue number	8
Pages (from-to)	2759-2766
ISSN	1432-8488
DOIs	https://doi.org/10.1007/s10008-012-1699-2
Publication status	Published - 2012

Keywords

ELECTROCHEMISTRY
OXIDE FUEL-CELLS
GD-DOPED CERIA
IMPEDANCE SPECTROSCOPY
OXYGEN REDUCTION
LA1-XSRXMN1-YCOYO3+/-DELTA PEROVSKITES
SURFACE EXCHANGE
THIN-FILM
CATHODES
INFILTRATION
DIFFUSION

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10.1007/s10008-012-1699-2

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title = "Electrochemical performance and stability of nano-particulate and bi-continuous La1-XSrXCoO3 and Ce0.9Gd0.1O1.95 composite electrodes",

abstract = "A bi-continuous porous cathode consisting of nano-particles of strontium substituted lanthanum cobaltite (LSC) covering the surface of a Ce0.9Gd0.1O1.95 (CGO10) backbone has been produced. The polarization resistance (R (P)) of this cathode was measured to similar to 35 m Omega cm(2) at 650 A degrees C. The area-specific resistance at 650 A degrees C (ASR) when applied onto an anode supported cell (ASC) was found to increase from 540 to 730 m Omega cm(2) when subjected to a thermal cycle to 850 A degrees C. This effect was attributed to particles coarsening but also to a reaction with the electrolyte. The results imply that a CGO10 barrier is required for this type of nano-structured cathode.",

keywords = "ELECTROCHEMISTRY, OXIDE FUEL-CELLS, GD-DOPED CERIA, IMPEDANCE SPECTROSCOPY, OXYGEN REDUCTION, LA1-XSRXMN1-YCOYO3+/-DELTA PEROVSKITES, SURFACE EXCHANGE, THIN-FILM, CATHODES, INFILTRATION, DIFFUSION",

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T1 - Electrochemical performance and stability of nano-particulate and bi-continuous La1-XSrXCoO3 and Ce0.9Gd0.1O1.95 composite electrodes

AU - Hjalmarsson, Per

AU - Hallinder, Jonathan

AU - Mogensen, Mogens Bjerg

PY - 2012

Y1 - 2012

N2 - A bi-continuous porous cathode consisting of nano-particles of strontium substituted lanthanum cobaltite (LSC) covering the surface of a Ce0.9Gd0.1O1.95 (CGO10) backbone has been produced. The polarization resistance (R (P)) of this cathode was measured to similar to 35 m Omega cm(2) at 650 A degrees C. The area-specific resistance at 650 A degrees C (ASR) when applied onto an anode supported cell (ASC) was found to increase from 540 to 730 m Omega cm(2) when subjected to a thermal cycle to 850 A degrees C. This effect was attributed to particles coarsening but also to a reaction with the electrolyte. The results imply that a CGO10 barrier is required for this type of nano-structured cathode.

AB - A bi-continuous porous cathode consisting of nano-particles of strontium substituted lanthanum cobaltite (LSC) covering the surface of a Ce0.9Gd0.1O1.95 (CGO10) backbone has been produced. The polarization resistance (R (P)) of this cathode was measured to similar to 35 m Omega cm(2) at 650 A degrees C. The area-specific resistance at 650 A degrees C (ASR) when applied onto an anode supported cell (ASC) was found to increase from 540 to 730 m Omega cm(2) when subjected to a thermal cycle to 850 A degrees C. This effect was attributed to particles coarsening but also to a reaction with the electrolyte. The results imply that a CGO10 barrier is required for this type of nano-structured cathode.

KW - ELECTROCHEMISTRY

KW - OXIDE FUEL-CELLS

KW - GD-DOPED CERIA

KW - IMPEDANCE SPECTROSCOPY

KW - OXYGEN REDUCTION

KW - LA1-XSRXMN1-YCOYO3+/-DELTA PEROVSKITES

KW - SURFACE EXCHANGE

KW - THIN-FILM

KW - CATHODES

KW - INFILTRATION

KW - DIFFUSION

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DO - 10.1007/s10008-012-1699-2

M3 - Journal article

SN - 1432-8488

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EP - 2766

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

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