Issue 17, 2009

On the conduction pathway for protons in nanocrystalline yttria-stabilized zirconia

Abstract

In this communication we elucidate a microstructural picture of proton conduction in nano-crystalline yttria-stabilized zirconia at low temperatures (Kim et al. Adv. Mater., 2008, 20, 556). Based on careful analysis of electrical impedance spectra obtained from samples with grain sizes of ∼13 and ∼100 nm under both wet and dry atmospheres over a wide range of temperatures (room temperature–500 °C), we were able to identify the pathway for proton conduction in this material. It was found that the grain boundaries in nano-crystalline yttria-stabilized zirconia are highly selective for ion transport, being conductive for proton transport but resistive for oxygen-ion transport.

Graphical abstract: On the conduction pathway for protons in nanocrystalline yttria-stabilized zirconia

Supplementary files

Article information

Article type
Communication
Submitted
26 Jan 2009
Accepted
17 Feb 2009
First published
02 Mar 2009

Phys. Chem. Chem. Phys., 2009,11, 3035-3038

On the conduction pathway for protons in nanocrystalline yttria-stabilized zirconia

S. Kim, H. J. Avila-Paredes, S. Wang, C. Chen, R. A. De Souza, M. Martin and Z. A. Munir, Phys. Chem. Chem. Phys., 2009, 11, 3035 DOI: 10.1039/B901623F

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