Incorporation and conduction of proton in SrCe0.9 - XZrxY0.1O3 - δ

Yuji Okuyama; Kaori Isa; Young Sung Lee; Takaaki Sakai; Hiroshige Matsumoto

doi:10.1016/j.ssi.2015.01.010

Incorporation and conduction of proton in SrCe_{0.9 - X}Zr_xY_0.1O_{3 - δ}

Yuji Okuyama, Kaori Isa, Young Sung Lee, Takaaki Sakai, Hiroshige Matsumoto

Applied Chemistry

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

38 Citations (Scopus)

Abstract

In order to clarify the mixed effect of a cation on proton conduction, the electrical conductivity and the proton concentration of SrCe_{0.9 - x}Zr_xY_0.1O_{3 - δ} (x = 0.0, 0.3, 0.5, 0.7, 0.9) were measured by the AC impedance method and thermogravimetric analysis at 573-1173 K. The electrical conductivity reached a maximum value at x = 0.5. The proton concentration at x = 0.5 is the highest at this experimental temperature. The condition of the oxygen vacancy was examined by a Raman spectroscopic analysis. The Raman band around 350 cm^{- 1} attributed to the CeO₆ stretching mode was observed and the half band width of the peak is broad when the cation on the B site is a mixture of Ce^{4 +} and Zr^{4 +}. It was found that the symmetry of the octahedron around B-site might be reduced due to the cation mix on the B-site.

Original language	English
Pages (from-to)	35-38
Number of pages	4
Journal	Solid State Ionics
Volume	275
DOIs	https://doi.org/10.1016/j.ssi.2015.01.010
Publication status	Published - Jul 1 2015

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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title = "Incorporation and conduction of proton in SrCe0.9 - XZrxY0.1O3 - δ",

abstract = "In order to clarify the mixed effect of a cation on proton conduction, the electrical conductivity and the proton concentration of SrCe0.9 - xZrxY0.1O3 - δ (x = 0.0, 0.3, 0.5, 0.7, 0.9) were measured by the AC impedance method and thermogravimetric analysis at 573-1173 K. The electrical conductivity reached a maximum value at x = 0.5. The proton concentration at x = 0.5 is the highest at this experimental temperature. The condition of the oxygen vacancy was examined by a Raman spectroscopic analysis. The Raman band around 350 cm- 1 attributed to the CeO6 stretching mode was observed and the half band width of the peak is broad when the cation on the B site is a mixture of Ce4 + and Zr4 +. It was found that the symmetry of the octahedron around B-site might be reduced due to the cation mix on the B-site.",

author = "Yuji Okuyama and Kaori Isa and Lee, {Young Sung} and Takaaki Sakai and Hiroshige Matsumoto",

note = "Funding Information: This study was partially supported by JSPS KAKENHI Grant Number 25709072 (Grant-in-Aid for Young Scientists (A)) and by the International Institute for Carbon Neutral Energy Research ( WPI-I2CNER ). Publisher Copyright: {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

year = "2015",

month = jul,

day = "1",

doi = "10.1016/j.ssi.2015.01.010",

language = "English",

volume = "275",

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journal = "Solid State Ionics",

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T1 - Incorporation and conduction of proton in SrCe0.9 - XZrxY0.1O3 - δ

AU - Okuyama, Yuji

AU - Isa, Kaori

AU - Lee, Young Sung

AU - Sakai, Takaaki

AU - Matsumoto, Hiroshige

N1 - Funding Information: This study was partially supported by JSPS KAKENHI Grant Number 25709072 (Grant-in-Aid for Young Scientists (A)) and by the International Institute for Carbon Neutral Energy Research ( WPI-I2CNER ). Publisher Copyright: © 2015 Elsevier B.V. All rights reserved.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - In order to clarify the mixed effect of a cation on proton conduction, the electrical conductivity and the proton concentration of SrCe0.9 - xZrxY0.1O3 - δ (x = 0.0, 0.3, 0.5, 0.7, 0.9) were measured by the AC impedance method and thermogravimetric analysis at 573-1173 K. The electrical conductivity reached a maximum value at x = 0.5. The proton concentration at x = 0.5 is the highest at this experimental temperature. The condition of the oxygen vacancy was examined by a Raman spectroscopic analysis. The Raman band around 350 cm- 1 attributed to the CeO6 stretching mode was observed and the half band width of the peak is broad when the cation on the B site is a mixture of Ce4 + and Zr4 +. It was found that the symmetry of the octahedron around B-site might be reduced due to the cation mix on the B-site.

AB - In order to clarify the mixed effect of a cation on proton conduction, the electrical conductivity and the proton concentration of SrCe0.9 - xZrxY0.1O3 - δ (x = 0.0, 0.3, 0.5, 0.7, 0.9) were measured by the AC impedance method and thermogravimetric analysis at 573-1173 K. The electrical conductivity reached a maximum value at x = 0.5. The proton concentration at x = 0.5 is the highest at this experimental temperature. The condition of the oxygen vacancy was examined by a Raman spectroscopic analysis. The Raman band around 350 cm- 1 attributed to the CeO6 stretching mode was observed and the half band width of the peak is broad when the cation on the B site is a mixture of Ce4 + and Zr4 +. It was found that the symmetry of the octahedron around B-site might be reduced due to the cation mix on the B-site.

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ER -

Incorporation and conduction of proton in SrCe_{0.9 - X}Zr_xY_0.1O_{3 - δ}

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