Issue 30, 2010
From the journal:

Journal of Materials Chemistry

Room-temperature protonic conduction in nanocrystalline films of yttria-stabilized zirconia†

Hugo J. Avila-Paredes,ab   Enrique Barrera-Calva,b   Harlan U. Anderson,c   Roger A. De Souza,d   Manfred Martin,d   Zuhair A. Munira  and  Sangtae Kim*a  

* Corresponding authors

a Department of Chemical Engineering and Materials Science, University of California, Davis, CA, USA
E-mail: chmkim@ucdavis.edu

b Departamento de Ingeniería de Procesos e Hidráulica, Universidad Autónoma Metropolitana, Unidad Iztapalapa, Mexico City, Mexico

c Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, MO, USA

d Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany

Abstract

We report the results of our investigation on protonic conduction in 1 μm-thick polycrystalline films of 8 mol% yttria-stabilized zirconia (YSZ) with an average grain size of 17 nm prepared on sapphire substrate using a spin-coating process. Protonic conductivity of the films is found to be higher by over an order of magnitude (at 30 °C) than earlier reported values for nanocrystalline YSZ bulk ceramics with a similar grain size. This value is comparable to the oxygen-ionic conductivity of this material presented at about 400 °C. These results suggest that, besides grain size, the structural characteristics of the grain boundaries may also play an important role in determining protonic transport in this material, and possibly other nanocrystalline solid electrolytes (SEs), and that the protonic conductivity can further be enhanced by optimizing such characteristics of the grain boundaries.

Graphical abstract: Room-temperature protonic conduction in nanocrystalline films of yttria-stabilized zirconia

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Article information

DOI
https://doi.org/10.1039/C0JM00051E
Article type
Communication
Submitted
18 Jan 2010
Accepted
11 Mar 2010
First published
31 Mar 2010

J. Mater. Chem., 2010,20, 6235-6238

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Room-temperature protonic conduction in nanocrystalline films of yttria-stabilized zirconia

H. J. Avila-Paredes, E. Barrera-Calva, H. U. Anderson, R. A. De Souza, M. Martin, Z. A. Munir and S. Kim, J. Mater. Chem., 2010, 20, 6235 DOI: 10.1039/C0JM00051E

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