Synthesis and characterization of composite electrolytes based on samaria-doped ceria and Na/Li carbonates
authors Lapa, CM; Figueiredo, FML; de Souza, DPF; Song, L; Zhu, B; Marques, FMB
nationality International
journal INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
author keywords Composite electrolytes; Samaria-doped ceria; Alkali carbonates; Nanosized ceria; Microstructural characterization; Impedance spectroscopy
keywords ITSOFC APPLICATIONS; IONIC-CONDUCTIVITY; FUEL-CELL; CONDUCTORS; POWDER
abstract Samaria-doped ceria-based composites with a 2:1 addition of Li and Na carbonates (or simple Na carbonate as admixture) were prepared mixing nanosized powders of the ceramic phase with the remaining constituents. Samples fired at relatively low temperatures (below 700 degrees C) were characterized by X-ray diffraction, scanning electron microscopy combined with energy dispersive spectroscopy and impedance spectroscopy in air. These composites showed a complex but homogeneous distribution of both phases, with one ceramic skeleton of bonded nanosized grains surrounded by the carbonate-based phase. Impedance spectroscopy data was used to confirm the impressive electrical conductivity of these materials, but also to put into evidence the complex nature of the charge transport process, clearly deviating from classical electrolytes. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0360-3199
year published 2010
volume 35
issue 7
beginning page 2953
ending page 2957
digital object identifier (doi) 10.1016/j.ijhydene.2009.05.036
web of science category Chemistry, Physical; Electrochemistry; Energy & Fuels
subject category Chemistry; Electrochemistry; Energy & Fuels
unique article identifier WOS:000276692800072
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 4.229
5 year journal impact factor 4.064
category normalized journal impact factor percentile 73.585
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg