Mixed ionic-electronic conductors: effects of ceramic microstructure on transport properties
authors Kharton, VV; Marques, FMB
nationality International
journal CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
author keywords ceramics; microstructure; oxygen ionic conductivity; mixed conductor; grain boundary
keywords FORMER SOVIET-UNION; OXIDE FUEL-CELLS; DEPENDENT ELECTRICAL-CONDUCTIVITY; OXYGEN PERMEATION PROPERTIES; GRAIN-BOUNDARY CONDUCTIVITY; FARADAIC EFFICIENCY; SOLID ELECTROLYTES; DOPED CERIA; COMPOSITE; MEMBRANES
abstract Recent experimental data clearly show that microstructure has a significant influence on the minor contributions to the total conductivity, following similar trends observed for the major conductivity components, in oxide semiconductors and solid-electrolyte ceramics. As for microcrystalline solid-electrolyte materials, increasing grain size in ceramics with predominant electronic transport often leads to a higher ionic conductivity. Interaction of the components in oxide composite materials may play a critical role-decreasing Up: oxygen ionic conduction. Both ionic transport in materials with dominant electronic conductivity and electronic conduction in solid electrolytes should be analyzed not only as properties of an oxide phase, deter mined by the overall composition, oxygen partial pressure and charge carrier mobility, but also as functions of the ceramic microstructure-the latter becoming an increasingly important tool in the design of materials performance. (C) 2002 Elsevier Science Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 1359-0286
year published 2002
volume 6
issue 3
beginning page 261
ending page 269
digital object identifier (doi) 10.1016/S1359-0286(02)00033-5
web of science category Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
subject category Materials Science; Physics
unique article identifier WOS:000178895700012
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 6.548
5 year journal impact factor 7.105
category normalized journal impact factor percentile 85.364
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg