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Wonyoung Lee, Hee Joon Jung, Min Hwan Lee, Young-Beom Kim, Joong Sun Park, Robert Sinclair and Fritz B. Prinz Oxygen Surface Exchange at Grain Boundaries of Oxide Ion Conductors Advanced Functional Materials 22

Version of Record online: 20 DEC 2011 | DOI: 10.1002/adfm.201101996

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3D concentration ratio maps of Gd/Ce and O/Ce near grain boundaries of gadolinia-doped ceria are acquired using energy dispersive spectroscopy in scanning transmission electron microscopy. The higher concentration of oxide ion vacancies at grain boundaries facilitates the oxygen surface exchange.

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