Conductivity of SrCrO4 and its influence on deterioration of electrochemical performance of cathodes in solid oxide fuel cells

W. Liu; E. Yu Konysheva

doi:10.1149/05901.0327ecst

Conductivity of SrCrO₄ and its influence on deterioration of electrochemical performance of cathodes in solid oxide fuel cells

W. Liu, E. Yu Konysheva

Research output: Journal Publication › Conference article › peer-review

15 Citations (Scopus)

Abstract

SrCrO₄ crystallizes in monoclinic space group P2₁/n and under static air exhibits a low total conductivity (1.8 × 10^-4 Ohm-1× cm^-1 at 800 °C). Composites fabricated from La_0.58Sr_0.4Co_0.2Fe_0.8O₃ perovskite and SrCrO₄ remain two phases after heating at 900 °C for a short period of time. Model experiments were carried out to identify an influence of current load on the stability of SrCrO₄ surface layer and redistribution of chromium between the surface and volume of cathode, thereby giving insight in to the mechanism of Cr-poisoning of Co-containing perovskite cathodes.

Original language	English
Pages (from-to)	327-332
Number of pages	6
Journal	ECS Transactions
Volume	59
Issue number	1
DOIs	https://doi.org/10.1149/05901.0327ecst
Publication status	Published - 2014
Externally published	Yes
Event	2014 Electrochemical Conference on Energy and the Environment, ECEE 2014 - Shanghai, China Duration: 13 Mar 2014 → 16 Mar 2014

ASJC Scopus subject areas

Engineering (all)

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10.1149/05901.0327ecst

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title = "Conductivity of SrCrO4 and its influence on deterioration of electrochemical performance of cathodes in solid oxide fuel cells",

abstract = "SrCrO4 crystallizes in monoclinic space group P21/n and under static air exhibits a low total conductivity (1.8 × 10-4 Ohm-1× cm-1 at 800 °C). Composites fabricated from La0.58Sr0.4Co0.2Fe0.8O3 perovskite and SrCrO4 remain two phases after heating at 900 °C for a short period of time. Model experiments were carried out to identify an influence of current load on the stability of SrCrO4 surface layer and redistribution of chromium between the surface and volume of cathode, thereby giving insight in to the mechanism of Cr-poisoning of Co-containing perovskite cathodes.",

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T1 - Conductivity of SrCrO4 and its influence on deterioration of electrochemical performance of cathodes in solid oxide fuel cells

AU - Liu, W.

AU - Konysheva, E. Yu

N1 - Publisher Copyright: © The Electrochemical Society.

PY - 2014

Y1 - 2014

N2 - SrCrO4 crystallizes in monoclinic space group P21/n and under static air exhibits a low total conductivity (1.8 × 10-4 Ohm-1× cm-1 at 800 °C). Composites fabricated from La0.58Sr0.4Co0.2Fe0.8O3 perovskite and SrCrO4 remain two phases after heating at 900 °C for a short period of time. Model experiments were carried out to identify an influence of current load on the stability of SrCrO4 surface layer and redistribution of chromium between the surface and volume of cathode, thereby giving insight in to the mechanism of Cr-poisoning of Co-containing perovskite cathodes.

AB - SrCrO4 crystallizes in monoclinic space group P21/n and under static air exhibits a low total conductivity (1.8 × 10-4 Ohm-1× cm-1 at 800 °C). Composites fabricated from La0.58Sr0.4Co0.2Fe0.8O3 perovskite and SrCrO4 remain two phases after heating at 900 °C for a short period of time. Model experiments were carried out to identify an influence of current load on the stability of SrCrO4 surface layer and redistribution of chromium between the surface and volume of cathode, thereby giving insight in to the mechanism of Cr-poisoning of Co-containing perovskite cathodes.

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DO - 10.1149/05901.0327ecst

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AN - SCOPUS:84920604727

SN - 1938-5862

VL - 59

SP - 327

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JO - ECS Transactions

JF - ECS Transactions

IS - 1

T2 - 2014 Electrochemical Conference on Energy and the Environment, ECEE 2014

Y2 - 13 March 2014 through 16 March 2014

ER -

Conductivity of SrCrO₄ and its influence on deterioration of electrochemical performance of cathodes in solid oxide fuel cells

Abstract

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