Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/19610| Title: | One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates |
| Author: | Rajesh, Surendran Macedo, Daniel A. Nascimento, Rubens M. Souza, Graziele L. Figueiredo, Filipe M. L. Marques, Fernando M. B. |
| Keywords: | OXIDE FUEL-CELLS ENHANCED IONIC-CONDUCTIVITY PERCENT EUTECTIC MIXTURE LOW-TEMPERATURE SOFCS RAMAN-SPECTRA 973 K SOLUBILITY SOLVATION DIOXIDE PART |
| Issue Date: | 2013 |
| Publisher: | PERGAMON-ELSEVIER SCIENCE LTD |
| Abstract: | Europium-doped ceria (EDC, Ce0.9Eu0.1O2-delta)/alkaline carbonate (LNC, (Li,Na)(2)CO3) composite ceramics prepared through a one-step citrate-based route were analyzed by powder X-ray diffraction, infrared and laser Raman spectroscopies as well as scanning and transmission electron microscopy. The electrochemical behavior of the electrolyte material was studied by impedance spectroscopy in air, CO2 and N-2 + H-2 (90/10 vol%, respectively) gas mixtures, in the temperature range 300-600 degrees C. The sub micrometric and even nanosized ceramic particles appeared as merged inside the mixed carbonates, with modest grain to grain necking. The EDC/LNC composite electrolytes showed a conductivity of 0.27 S cm(-1) at 600 degrees C in air, amongst the best ever reported, exceeding the usual requirements for fuel cell applications. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. |
| Peer review: | yes |
| URI: | http://hdl.handle.net/10773/19610 |
| DOI: | 10.1016/j.ijhydene.2013.05.090 |
| ISSN: | 0360-3199 |
| Publisher Version: | 10.1016/j.ijhydene.2013.05.090 |
| Appears in Collections: | CICECO - Artigos |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| One-step synthesis of composite electrolytes of Eu-doped ceria and alkali metal carbonates_10.1016j.ijhydene.2013.05.090.pdf | 887.57 kB | Adobe PDF |  |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.