Financial support for this work was provided by the U.S. Office of Naval Research and the Université Paul Sabatier. This research was conducted during a sabbatical visit by Ch.L-R. at the Naval Research Laboratory. The authors wish to thank Dr. Christopher N. Chervin, a U.S. National Research Council–NRL Postdoctoral Associate (2006–2008) for critical and helpful discussions. Supporting Information is available online from Wiley InterScience or from the authors.
Ionic Nanowires at 600 °C: Using Nanoarchitecture to Optimize Electrical Transport in Nanocrystalline Gadolinium-Doped Ceria†
Article first published online: 25 MAY 2007
Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 19, Issue 13, pages 1734–1739, July, 2007
How to Cite
Laberty-Robert, C., Long, J. W., Pettigrew, K. A., Stroud, R. M. and Rolison, D. R. (2007), Ionic Nanowires at 600 °C: Using Nanoarchitecture to Optimize Electrical Transport in Nanocrystalline Gadolinium-Doped Ceria. Adv. Mater., 19: 1734–1739. doi: 10.1002/adma.200601840
- Issue published online: 26 JUN 2007
- Article first published online: 25 MAY 2007
- Manuscript Received: 11 AUG 2006
- U.S. Office of Naval Research
- Université Paul Sabatier
- Fuel cells, solid oxide;
- Nanostructured materials;
- Porous materials
The impact of nanoarchitecture on the electrical properties of sol–gel-derived Ce0.9Gd0.1O2 (CGO) is evaluated in O2 from 350 to 600 °C. The high degree of interconnectivity established between the < 10 nm crystallites in CGO aerogels (see figure) yields an electroceramic that responds as though it contains no grain boundaries and which exhibits long-range pathways for ionic diffusion (ca. 0.5 mm).