Evaluation of the cathode performance and the distribution of deposited Cr species in the LSCF6428 cathode by Cr poisoning

Do Hyung Cho, Haruo Kishimoto, Katsuhiko Yamaji, Manuel E. Brito, Katherine Develos-Bagarinao, Mina Nishi, Taro Shimonosono, Fangfang Wang, Harumi Yokokawa, Teruhisa Horita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

The Cr poisoning behavior of LSCF6428 cathode was investigated under Cr-containing vapor conditions at 1073 K using LSCF6428/GDC/Pt cells. When exposed to the Cr-containing vapor, the polarization resistance (low frequency contribution) evaluated from the fitting results of AC impedance measurements of the samples was significantly increased. The sample operated under polarization condition for a longer time (380 h) had higher Cr concentration and lower Sr concentration inside the LSCF cathode, but its resistance was lower compared to the sample operated for a shorter time (75 h) under OCV condition. Microstructural and compositional analysis of the samples operated under polarization condition revealed a significant change in microstructure related to Sr transport. The detailed concentration of Cr and Sr inside the porous LSCF cathode was quantitatively measured by secondary ion mass spectrometer (SIMS), from which the distributions of Cr and Sr inside the porous LSCF cathode after Cr poisoning were derived.

Original languageEnglish
Title of host publicationECS Transactions
PublisherElectrochemical Society Inc.
Pages1865-1872
Number of pages8
Volume57
Edition1
DOIs
Publication statusPublished - 2013
Externally publishedYes

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Cathodes
Polarization
Vapors
Mass spectrometers
Microstructure
Ions

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Cho, D. H., Kishimoto, H., Yamaji, K., Brito, M. E., Develos-Bagarinao, K., Nishi, M., ... Horita, T. (2013). Evaluation of the cathode performance and the distribution of deposited Cr species in the LSCF6428 cathode by Cr poisoning. In ECS Transactions (1 ed., Vol. 57, pp. 1865-1872). Electrochemical Society Inc.. https://doi.org/10.1149/05701.1865ecst

Evaluation of the cathode performance and the distribution of deposited Cr species in the LSCF6428 cathode by Cr poisoning. / Cho, Do Hyung; Kishimoto, Haruo; Yamaji, Katsuhiko; Brito, Manuel E.; Develos-Bagarinao, Katherine; Nishi, Mina; Shimonosono, Taro; Wang, Fangfang; Yokokawa, Harumi; Horita, Teruhisa.

ECS Transactions. Vol. 57 1. ed. Electrochemical Society Inc., 2013. p. 1865-1872.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cho, DH, Kishimoto, H, Yamaji, K, Brito, ME, Develos-Bagarinao, K, Nishi, M, Shimonosono, T, Wang, F, Yokokawa, H & Horita, T 2013, Evaluation of the cathode performance and the distribution of deposited Cr species in the LSCF6428 cathode by Cr poisoning. in ECS Transactions. 1 edn, vol. 57, Electrochemical Society Inc., pp. 1865-1872. https://doi.org/10.1149/05701.1865ecst
Cho DH, Kishimoto H, Yamaji K, Brito ME, Develos-Bagarinao K, Nishi M et al. Evaluation of the cathode performance and the distribution of deposited Cr species in the LSCF6428 cathode by Cr poisoning. In ECS Transactions. 1 ed. Vol. 57. Electrochemical Society Inc. 2013. p. 1865-1872 https://doi.org/10.1149/05701.1865ecst
Cho, Do Hyung ; Kishimoto, Haruo ; Yamaji, Katsuhiko ; Brito, Manuel E. ; Develos-Bagarinao, Katherine ; Nishi, Mina ; Shimonosono, Taro ; Wang, Fangfang ; Yokokawa, Harumi ; Horita, Teruhisa. / Evaluation of the cathode performance and the distribution of deposited Cr species in the LSCF6428 cathode by Cr poisoning. ECS Transactions. Vol. 57 1. ed. Electrochemical Society Inc., 2013. pp. 1865-1872
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abstract = "The Cr poisoning behavior of LSCF6428 cathode was investigated under Cr-containing vapor conditions at 1073 K using LSCF6428/GDC/Pt cells. When exposed to the Cr-containing vapor, the polarization resistance (low frequency contribution) evaluated from the fitting results of AC impedance measurements of the samples was significantly increased. The sample operated under polarization condition for a longer time (380 h) had higher Cr concentration and lower Sr concentration inside the LSCF cathode, but its resistance was lower compared to the sample operated for a shorter time (75 h) under OCV condition. Microstructural and compositional analysis of the samples operated under polarization condition revealed a significant change in microstructure related to Sr transport. The detailed concentration of Cr and Sr inside the porous LSCF cathode was quantitatively measured by secondary ion mass spectrometer (SIMS), from which the distributions of Cr and Sr inside the porous LSCF cathode after Cr poisoning were derived.",
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AU - Develos-Bagarinao, Katherine

AU - Nishi, Mina

AU - Shimonosono, Taro

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AU - Yokokawa, Harumi

AU - Horita, Teruhisa

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AB - The Cr poisoning behavior of LSCF6428 cathode was investigated under Cr-containing vapor conditions at 1073 K using LSCF6428/GDC/Pt cells. When exposed to the Cr-containing vapor, the polarization resistance (low frequency contribution) evaluated from the fitting results of AC impedance measurements of the samples was significantly increased. The sample operated under polarization condition for a longer time (380 h) had higher Cr concentration and lower Sr concentration inside the LSCF cathode, but its resistance was lower compared to the sample operated for a shorter time (75 h) under OCV condition. Microstructural and compositional analysis of the samples operated under polarization condition revealed a significant change in microstructure related to Sr transport. The detailed concentration of Cr and Sr inside the porous LSCF cathode was quantitatively measured by secondary ion mass spectrometer (SIMS), from which the distributions of Cr and Sr inside the porous LSCF cathode after Cr poisoning were derived.

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