Effect of partial substitution of in by Zr, Ti and Hf on protonic conductivity of BaInO2.5

Naoki Hideshima; Kenichi Hashizume

doi:10.1016/j.ssi.2010.09.029

Effect of partial substitution of in by Zr, Ti and Hf on protonic conductivity of BaInO_2.5

Naoki Hideshima, Kenichi Hashizume

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23 Citations (Scopus)

Abstract

The effect of partial substitution of In by Zr, Ti and Hf in BaInO _2.5 has been studied in order to improve its protonic conductivity. The isotope effect of H and D on the protonic conductivity has also been studied, which indicates that hydrogen diffusion is a rate-limiting process for the protonic conduction. Although the contents of substituting elements do not correlate well with the variation of the protonic conductivity, a 'free volume', which is usually introduced to interpret changes of the conductivity of oxide ion conductors, can do well. This suggests the free volume could be used as a figure of merit to improve the protonic conductivity in BaInO_2.5 based oxides.

Original language	English
Pages (from-to)	1659-1664
Number of pages	6
Journal	Solid State Ionics
Volume	181
Issue number	37-38
DOIs	https://doi.org/10.1016/j.ssi.2010.09.029
Publication status	Published - Dec 13 2010

All Science Journal Classification (ASJC) codes

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

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10.1016/j.ssi.2010.09.029

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abstract = "The effect of partial substitution of In by Zr, Ti and Hf in BaInO 2.5 has been studied in order to improve its protonic conductivity. The isotope effect of H and D on the protonic conductivity has also been studied, which indicates that hydrogen diffusion is a rate-limiting process for the protonic conduction. Although the contents of substituting elements do not correlate well with the variation of the protonic conductivity, a 'free volume', which is usually introduced to interpret changes of the conductivity of oxide ion conductors, can do well. This suggests the free volume could be used as a figure of merit to improve the protonic conductivity in BaInO2.5 based oxides.",

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AU - Hideshima, Naoki

AU - Hashizume, Kenichi

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Y1 - 2010/12/13

N2 - The effect of partial substitution of In by Zr, Ti and Hf in BaInO 2.5 has been studied in order to improve its protonic conductivity. The isotope effect of H and D on the protonic conductivity has also been studied, which indicates that hydrogen diffusion is a rate-limiting process for the protonic conduction. Although the contents of substituting elements do not correlate well with the variation of the protonic conductivity, a 'free volume', which is usually introduced to interpret changes of the conductivity of oxide ion conductors, can do well. This suggests the free volume could be used as a figure of merit to improve the protonic conductivity in BaInO2.5 based oxides.

AB - The effect of partial substitution of In by Zr, Ti and Hf in BaInO 2.5 has been studied in order to improve its protonic conductivity. The isotope effect of H and D on the protonic conductivity has also been studied, which indicates that hydrogen diffusion is a rate-limiting process for the protonic conduction. Although the contents of substituting elements do not correlate well with the variation of the protonic conductivity, a 'free volume', which is usually introduced to interpret changes of the conductivity of oxide ion conductors, can do well. This suggests the free volume could be used as a figure of merit to improve the protonic conductivity in BaInO2.5 based oxides.

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ER -

Effect of partial substitution of in by Zr, Ti and Hf on protonic conductivity of BaInO_2.5

Abstract

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