4.8 Article

Surface termination and subsurface restructuring of perovskite-based solid oxide electrode materials

Journal

ENERGY & ENVIRONMENTAL SCIENCE
Volume 7, Issue 11, Pages 3593-3599

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ee01497a

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Funding

  1. International Institute for Carbon Neutral Energy Research (wpi-I2CNER)
  2. World Premier International Research Center Initiative (WPI), MEXT, Japan
  3. Marie Curie Intra European Fellowships within the 7th European Community Framework Programme of the European Union [PIEF-GA-2010-274999, PIEF-GA-2009252711]
  4. [24226016]

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We study the outer atomic surfaces of a series of perovskite-based ceramics using low energy ion scattering spectroscopy. After high temperature treatment, segregated A-site (or acceptor substituent) cations dominate the outer surfaces with no B-site cations detected. We also find evidence of an associated B-cation enriched region below the surface.

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