Strongly enhanced oxygen ion transport through samarium-doped CeO2 nanopillars in nanocomposite films

Yang, Sangmo; Lee, Shinbuhm; Jian, Jie; Zhang, Wenrui; Lu, Ping; Jia, Quanxi; Wang, Haiyan; Noh, Tae Won; Kalinin, Sergei V.; MacManus-Driscoll, Judith L.

doi:10.1038/ncomms9588

Title: Strongly enhanced oxygen ion transport through samarium-doped CeO₂ nanopillars in nanocomposite films

Journal Article · Thu Oct 08 00:00:00 UTC 2015 · Nature Communications

DOI: https://doi.org/10.1038/ncomms9588 · OSTI ID:1223073

Yang, Sangmo ^[1]; Lee, Shinbuhm ^[2]; Jian, Jie ^[3]; Zhang, Wenrui ^[3]; Lu, Ping ^[4]; Jia, Quanxi ^[5]; Wang, Haiyan ^[3]; Noh, Tae Won ^[6]; Kalinin, Sergei V. ^[1]; MacManus-Driscoll, Judith L. ^[2]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Univ. of Cambridge (United Kingdom)
Texas A & M Univ., College Station, TX (United States)
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Seoul National Univ. (Korea, Republic of)

Enhancement of oxygen ion conductivity in oxides is important for low-temperature (<500 °C) operation of solid oxide fuel cells, sensors and other ionotronic devices. While huge ion conductivity has been demonstrated in planar heterostructure films, there has been considerable debate over the origin of the conductivity enhancement, in part because of the difficulties of probing buried ion transport channels. Here we create a practical geometry for device miniaturization, consisting of highly crystalline micrometre-thick vertical nanocolumns of Sm-doped CeO₂ embedded in supporting matrices of SrTiO₃. The ionic conductivity is higher by one order of magnitude than plain Sm-doped CeO₂ films. By using scanning probe microscopy, we show that the fast ion-conducting channels are not exclusively restricted to the interface but also are localized at the Sm-doped CeO₂ nanopillars. This work offers a pathway to realize spatially localized fast ion transport in oxides of micrometre thickness.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science; Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: European Research Council (ERC); US National Science Foundation (NSF); USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)

Grant/Contract Number:: AC04-94AL85000; AC05-00OR22725; AC52-06NA25396

OSTI ID:: 1223073

Report Number(s):: LA-UR--15-27228; SAND--2016-12739J; KC0403040; ERKCZ01

Journal Information:: Nature Communications, Journal Name: Nature Communications Vol. 6; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Determining interface structures in vertically aligned nanocomposite films Zhu, Bonan; Schusteritsch, Georg; Lu, P. Apollo - University of Cambridge Repository https://doi.org/10.17863/cam.40418	text	January 2019
The Sulphur Poisoning Behaviour of Gadolinia Doped Ceria Model Systems in Reducing Atmospheres Gerstl, Matthias; Nenning, Andreas; Iskandar, Riza Materials, Vol. 9, Issue 8 https://doi.org/10.3390/ma9080649	journal	August 2016

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