FISR–MIUR Project “Inorganic and hybrid nanosystems for the development and innovation of fuel cells” is gratefully acknowledged for financial support. Thanks to FILA INDUSTRIA CHIMICA SPA for the availability of the FEI Quanta 200 FEG-ESEM Instrument. Thanks to Mr. V. Corrado for technical assistance. Thanks to Dr Alessandra Sanson of ISTEC for anode preparation.
A Study on Sc2O3-Stabilized Zirconia Obtained by MOCVD as a Potential Electrolyte for Solid Oxide Fuel Cells†
Article first published online: 9 NOV 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Chemical Vapor Deposition
Volume 18, Issue 10-12, pages 289–294, December 2012
How to Cite
El Habra, N., Sartori, A., Bolzan, M., Favaro, M., Casarin, M., Boldrini, S., Doubova, L. and Rossetto, G. (2012), A Study on Sc2O3-Stabilized Zirconia Obtained by MOCVD as a Potential Electrolyte for Solid Oxide Fuel Cells. Chem. Vap. Deposition, 18: 289–294. doi: 10.1002/cvde.201207006
- Issue published online: 6 DEC 2012
- Article first published online: 9 NOV 2012
- Manuscript Revised: 17 AUG 2012
- Manuscript Received: 29 MAY 2012
- Ionic conductivity;
- Stabilized ZrO2
Dense, crack-free thin films (<5 µm) of the nanostructured scandia-zirconia system (Sc2O3:ZrO2) stabilized in the cubic-fluorite phase (c-ZrO2) are deposited through conventional low-pressure metal-organic(LP-MO) CVD by using β-diketonate metal complexes as precursors [(Zr(tmhd)4 and Sc(tmhd)3, with –tmhd = 2,2,6,6-tetramethyl-3,5-heptanedionate]. The compositional (energy dispersive X-ray spectroscopy – EDX), structural (X-ray diffraction – XRD) and morphological (field emission gun–environmental scanning electron microscopy – FEG-ESEM) analyses, confirmed the growth of dense partially and fully stabilized ZrO2, a suitable electrolyte for solid oxide fuel cells (SOFC). Results of impedance spectroscopy, which investigates the electrical conductivity of coating, deposited as thin as possible to guarantee the uniform covering of a porous substrate, are reported. Results of thin films of yttria-zirconia system (Y2O3:ZrO2), deposited with the same method, are also reported for comparison.