X-ray absorption and diffraction studies of La0.6Ca0.4CoO3 perovskite, a catalyst for bifunctional oxygen electrodes

O. Haas; F. Holzer; S. Müller; J. M. McBreen; X. Q. Yang; X. Sun; M. Balasubramanian

doi:10.1016/S0013-4686(02)00241-4

X-ray absorption and diffraction studies of La_0.6Ca_0.4CoO₃ perovskite, a catalyst for bifunctional oxygen electrodes

O. Haas, F. Holzer, S. Müller, J. M. McBreen, X. Q. Yang, X. Sun, M. Balasubramanian

Emerging and Solid-State Batteries

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

The chemical stability of La_0.6Ca_0.4CoO₃ perovskite as an electrocatalyst in bifunctional oxygen electrodes has been studied by ex-situ and in-situ X-ray absorption spectroscopy and X-ray diffraction measurements. The catalyst was investigated ex-situ as a powder mixed with BN, and in-situ on carbon supports in bilayer air electrodes at different potentials in an electrochemical cell with an alkaline electrolyte. It was found to be stable for at least 1300 h in electrodes operated under the conditions of rechargeable Zn/air cells. Published by Elsevier Science Ltd.

Original language	English
Pages (from-to)	3211-3217
Number of pages	7
Journal	Electrochimica Acta
Volume	47
Issue number	19
DOIs	https://doi.org/10.1016/S0013-4686(02)00241-4
State	Published - Jul 27 2002

Funding

The authors gratefully acknowledge support of the Swiss Federal Office of Energy and the US Department of Energy for financial support.

Keywords

Bifunctional oxygen electrodes
In-situ X-ray absorption
LaCaCoO perovskite
X-ray diffraction
Zn/air cells

Access to Document

10.1016/S0013-4686(02)00241-4

Cite this

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title = "X-ray absorption and diffraction studies of La0.6Ca0.4CoO3 perovskite, a catalyst for bifunctional oxygen electrodes",

abstract = "The chemical stability of La0.6Ca0.4CoO3 perovskite as an electrocatalyst in bifunctional oxygen electrodes has been studied by ex-situ and in-situ X-ray absorption spectroscopy and X-ray diffraction measurements. The catalyst was investigated ex-situ as a powder mixed with BN, and in-situ on carbon supports in bilayer air electrodes at different potentials in an electrochemical cell with an alkaline electrolyte. It was found to be stable for at least 1300 h in electrodes operated under the conditions of rechargeable Zn/air cells. Published by Elsevier Science Ltd.",

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T1 - X-ray absorption and diffraction studies of La0.6Ca0.4CoO3 perovskite, a catalyst for bifunctional oxygen electrodes

AU - Haas, O.

AU - Holzer, F.

AU - Müller, S.

AU - McBreen, J. M.

AU - Yang, X. Q.

AU - Sun, X.

AU - Balasubramanian, M.

PY - 2002/7/27

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AB - The chemical stability of La0.6Ca0.4CoO3 perovskite as an electrocatalyst in bifunctional oxygen electrodes has been studied by ex-situ and in-situ X-ray absorption spectroscopy and X-ray diffraction measurements. The catalyst was investigated ex-situ as a powder mixed with BN, and in-situ on carbon supports in bilayer air electrodes at different potentials in an electrochemical cell with an alkaline electrolyte. It was found to be stable for at least 1300 h in electrodes operated under the conditions of rechargeable Zn/air cells. Published by Elsevier Science Ltd.

KW - Bifunctional oxygen electrodes

KW - In-situ X-ray absorption

KW - LaCaCoO perovskite

KW - X-ray diffraction

KW - Zn/air cells

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