Effects of three-dimensional mechano-chemical tensile strain on fast oxygen diffusion in Au-dispersed Pr1.90Ni0.71Cu0.24Ga0.05O4+δ

Junji Hyodo; Ken Tominaga; Shintaro Ida; Tatsumi Ishihara

doi:10.1039/c5ta08029k

Effects of three-dimensional mechano-chemical tensile strain on fast oxygen diffusion in Au-dispersed Pr_1.90Ni_0.71Cu_0.24Ga_0.05O_4+δ

Junji Hyodo, Ken Tominaga, Shintaro Ida, Tatsumi Ishihara

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

3 Citations (Scopus)

Abstract

There has been considerable interest in the effects of strain on electrical conduction in ionic conductors, and it has been suggested that tensile strain in oxide films (2D strain) can significantly increase oxide ion conductivity. Here, we demonstrate the successful generation of 3-dimensional (3D) tensile strain in Pr₂NiO₄ by dispersing Au particles into the grains. The oxide ion diffusivity was increased significantly by Au dispersion. Redox titration measurements suggest that the 3D tensile strain increased the amount of excess oxygen. Therefore, it is concluded that the mechanical strain changes both the oxide ionic carrier concentration and mobility.

Original language	English
Pages (from-to)	3844-3849
Number of pages	6
Journal	Journal of Materials Chemistry A
Volume	4
Issue number	10
DOIs	https://doi.org/10.1039/c5ta08029k
Publication status	Published - 2016

All Science Journal Classification (ASJC) codes

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1039/c5ta08029k

Cite this

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title = "Effects of three-dimensional mechano-chemical tensile strain on fast oxygen diffusion in Au-dispersed Pr1.90Ni0.71Cu0.24Ga0.05O4+δ",

abstract = "There has been considerable interest in the effects of strain on electrical conduction in ionic conductors, and it has been suggested that tensile strain in oxide films (2D strain) can significantly increase oxide ion conductivity. Here, we demonstrate the successful generation of 3-dimensional (3D) tensile strain in Pr2NiO4 by dispersing Au particles into the grains. The oxide ion diffusivity was increased significantly by Au dispersion. Redox titration measurements suggest that the 3D tensile strain increased the amount of excess oxygen. Therefore, it is concluded that the mechanical strain changes both the oxide ionic carrier concentration and mobility.",

author = "Junji Hyodo and Ken Tominaga and Shintaro Ida and Tatsumi Ishihara",

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T1 - Effects of three-dimensional mechano-chemical tensile strain on fast oxygen diffusion in Au-dispersed Pr1.90Ni0.71Cu0.24Ga0.05O4+δ

AU - Hyodo, Junji

AU - Tominaga, Ken

AU - Ida, Shintaro

AU - Ishihara, Tatsumi

PY - 2016

Y1 - 2016

N2 - There has been considerable interest in the effects of strain on electrical conduction in ionic conductors, and it has been suggested that tensile strain in oxide films (2D strain) can significantly increase oxide ion conductivity. Here, we demonstrate the successful generation of 3-dimensional (3D) tensile strain in Pr2NiO4 by dispersing Au particles into the grains. The oxide ion diffusivity was increased significantly by Au dispersion. Redox titration measurements suggest that the 3D tensile strain increased the amount of excess oxygen. Therefore, it is concluded that the mechanical strain changes both the oxide ionic carrier concentration and mobility.

AB - There has been considerable interest in the effects of strain on electrical conduction in ionic conductors, and it has been suggested that tensile strain in oxide films (2D strain) can significantly increase oxide ion conductivity. Here, we demonstrate the successful generation of 3-dimensional (3D) tensile strain in Pr2NiO4 by dispersing Au particles into the grains. The oxide ion diffusivity was increased significantly by Au dispersion. Redox titration measurements suggest that the 3D tensile strain increased the amount of excess oxygen. Therefore, it is concluded that the mechanical strain changes both the oxide ionic carrier concentration and mobility.

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