@article{b9ebf2f1df624119adc95300e2936609,
title = "Visualizing Anisotropic Oxygen Diffusion in Ceria under Activated Conditions",
abstract = "Oxygen reactivity plays a key role in the performance of ceria-based catalysts. Aberration-corrected transmission electron microscopy and molecular dynamics simulations were used to study the oxygen atom diffusion in ceria under activated conditions. Reactive oxygen atom and its real-time diffusion were visualized. The interplay between cerium and oxygen atoms originating from a Coulomb interaction was revealed by the out-of-plane buckling of cerium atoms associated with oxygen transport. Anisotropic oxygen atom diffusion that depends on crystal orientations was discovered, demonstrating a preferential [001] crystallographic diffusion pathway. These findings reveal prospects for applications of anisotropic orientation-relevant fluorite-structured oxides.",
author = "Liang Zhu and Xin Jin and Zhang, {Yu Yang} and Shixuan Du and Lei Liu and Tijana Rajh and Zhi Xu and Wenlong Wang and Xuedong Bai and Jianguo Wen and Lifen Wang",
note = "Funding Information: This work was supported by the National Natural Science Foundation (11974388, 11974001, 51872284, U1932153, 21872172, 21773303, and 51421002), the National Key R&D Program (2016YFA0300804, 2016YFA0300903, 2018YFA0305800, 2019YFA0307801, and 2019YFA0308500), the Program from Chinese Academy of Sciences (ZDYZ2015-1, Y8K5261B11, XDB30000000, XDB28000000, and XDB07030100), and Beijing Natural Science Foundation (2192022, Z190011). L.W. is grateful for the support from the Youth Innovation Promotion Association of CAS (2020009). This work, including Argonne Chromatic Aberration-corrected TEM, was performed at the Center for Nanoscale Materials, an Office of Science user facility, supported by the U.S. Department of Energy, Office of Science under Contract No. DE-AC02-06CH11357. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",
year = "2020",
month = feb,
day = "5",
doi = "10.1103/PhysRevLett.124.056002",
language = "English (US)",
volume = "124",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "5",
}