Enhanced oxide-ion conductivity of solid-state electrolyte mesocrystals

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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


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 languageEnglish
Pages (from-to)4523-4530
Number of pages8
Issue number10
Publication statusPublished - 2019 Mar 14

ASJC Scopus subject areas

  • General Materials Science


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