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Title: Strongly enhanced oxygen ion transport through samarium-doped CeO 2 nanopillars in nanocomposite films

Abstract

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 CeO 2 embedded in supporting matrices of SrTiO 3. The ionic conductivity is higher by one order of magnitude than plain Sm-doped CeO 2 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 CeO 2 nanopillars. This work offers a pathway to realize spatially localized fast ion transport in oxides of micrometre thickness.

Authors:
 [1];  [2];  [3];  [3];  [4];  [5];  [3];  [6];  [1];  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Cambridge (United Kingdom)
  3. Texas A & M Univ., College Station, TX (United States)
  4. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  6. Seoul National Univ. (Korea, Republic of)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science; Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC); USDOE National Nuclear Security Administration (NNSA); European Research Council (ERC); National Science Foundation (NSF)
OSTI Identifier:
1223073
Alternate Identifier(s):
OSTI ID: 1236041; OSTI ID: 1340268
Report Number(s):
LA-UR-15-27228; SAND-2016-12739J
Journal ID: ISSN 2041-1723; KC0403040; ERKCZ01
Grant/Contract Number:  
AC05-00OR22725; AC52-06NA25396; AC04-94AL85000; ERC-2009-AdG-247276-NOVOX; NSF-1007969; DMR-1401266
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; Thin film; nanocomposite; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Yang, Sangmo, Lee, Shinbuhm, Jian, Jie, Zhang, Wenrui, Lu, Ping, Jia, Quanxi, Wang, Haiyan, Noh, Tae Won, Kalinin, Sergei V., and MacManus-Driscoll, Judith L. Strongly enhanced oxygen ion transport through samarium-doped CeO2 nanopillars in nanocomposite films. United States: N. p., 2015. Web. doi:10.1038/ncomms9588.
Yang, Sangmo, Lee, Shinbuhm, Jian, Jie, Zhang, Wenrui, Lu, Ping, Jia, Quanxi, Wang, Haiyan, Noh, Tae Won, Kalinin, Sergei V., & MacManus-Driscoll, Judith L. Strongly enhanced oxygen ion transport through samarium-doped CeO2 nanopillars in nanocomposite films. United States. doi:10.1038/ncomms9588.
Yang, Sangmo, Lee, Shinbuhm, Jian, Jie, Zhang, Wenrui, Lu, Ping, Jia, Quanxi, Wang, Haiyan, Noh, Tae Won, Kalinin, Sergei V., and MacManus-Driscoll, Judith L. Thu . "Strongly enhanced oxygen ion transport through samarium-doped CeO2 nanopillars in nanocomposite films". United States. doi:10.1038/ncomms9588. https://www.osti.gov/servlets/purl/1223073.
@article{osti_1223073,
title = {Strongly enhanced oxygen ion transport through samarium-doped CeO2 nanopillars in nanocomposite films},
author = {Yang, Sangmo and Lee, Shinbuhm and Jian, Jie and Zhang, Wenrui and Lu, Ping and Jia, Quanxi and Wang, Haiyan and Noh, Tae Won and Kalinin, Sergei V. and MacManus-Driscoll, Judith L.},
abstractNote = {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.},
doi = {10.1038/ncomms9588},
journal = {Nature Communications},
number = ,
volume = 6,
place = {United States},
year = {2015},
month = {10}
}

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