Enhanced oxide-ion conductivity of solid-state electrolyte mesocrystals

Keishi Tsukiyama; Mihiro Takasaki; Naoto Kitamura; Yasushi Idemoto; Yuya Oaki; Minoru Osada; Hiroaki Imai

doi:10.1039/c8nr09709g

Enhanced oxide-ion conductivity of solid-state electrolyte mesocrystals

Keishi Tsukiyama, Mihiro Takasaki, Naoto Kitamura, Yasushi Idemoto, Yuya Oaki, Minoru Osada, Hiroaki Imai

Department of Applied Chemistry

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

Oxide ion-conducting porous films were produced on a substrate by evaporation-induced self-assembly of rare earth-doped CeO ₂ (REDC) nanocubes 4-5 nm in size and subsequent mild calcination at 400 °C. Mesocrystalline structures comprising iso-oriented REDC nanocubes were formed by ordered assembly based on strict attachment of their {100} faces. Enhanced oxide-ion conductivities in a temperature range of 250-350 °C were observed on the mesocrystalline films consisting of Sm-doped CeO ₂ (SDC) nanocubes. The specific electrical properties of the mesocrystalline films are ascribed to improved surface-ion conduction due to a large specific surface area and a high crystallographic connectivity of SDC nanocubes.

Original language	English
Pages (from-to)	4523-4530
Number of pages	8
Journal	Nanoscale
Volume	11
Issue number	10
DOIs	https://doi.org/10.1039/c8nr09709g
Publication status	Published - 2019 Mar 14

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ASJC Scopus subject areas

Materials Science(all)

Cite this

Tsukiyama, K., Takasaki, M., Kitamura, N., Idemoto, Y., Oaki, Y., Osada, M., & Imai, H. (2019). Enhanced oxide-ion conductivity of solid-state electrolyte mesocrystals. Nanoscale, 11(10), 4523-4530. https://doi.org/10.1039/c8nr09709g

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abstract = " Oxide ion-conducting porous films were produced on a substrate by evaporation-induced self-assembly of rare earth-doped CeO 2 (REDC) nanocubes 4-5 nm in size and subsequent mild calcination at 400 °C. Mesocrystalline structures comprising iso-oriented REDC nanocubes were formed by ordered assembly based on strict attachment of their {100} faces. Enhanced oxide-ion conductivities in a temperature range of 250-350 °C were observed on the mesocrystalline films consisting of Sm-doped CeO 2 (SDC) nanocubes. The specific electrical properties of the mesocrystalline films are ascribed to improved surface-ion conduction due to a large specific surface area and a high crystallographic connectivity of SDC nanocubes. ",

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AU - Osada, Minoru

AU - Imai, Hiroaki

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10.1039/c8nr09709g