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Synthesis and characterization of Ca-substituted YAlO(3) by pechini route for solid oxide fuel cells

DSpace at IIT Bombay

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Title Synthesis and characterization of Ca-substituted YAlO(3) by pechini route for solid oxide fuel cells
 
Creator HARIHARAN, R
GOPALAN, P
 
Subject ION CONDUCTORS
ELECTROLYTES
TRANSPORT
CERAMICS
CONDUCTIVITY
Ceramic oxides
Solid electrolyte
Chemical synthesis
Impedance spectroscopy
Electrical properties
 
Description The high operating temperature requirement of solid oxide fuel cells demands electrolyte materials stable at temperatures around 800 degrees C. The perovskite material YAlO(3), with yttrium ion on the A-site and the aluminium ion on the B-site is being investigated as an electrolyte for solid oxide fuel cells. This work investigates the structure and electrical conductivity of undoped and Ca-doped YAlO(3) compositions that has been synthesized by the Pechini route. The samples have been investigated by X-ray diffraction studies. The electrical conductivity studies have been performed using a.c impedance spectroscopy in the range 200-800 degrees C in air. The doped YAlO(3) of composition x = 0.1 exhibits a total conductivity of about 2.2 mS/cm at 800 degrees C. The microstructural evaluation of the samples has been conducted by scanning electron microscopy coupled with energy dispersive spectrum analysis. (C) 2010 Elsevier Masson SAS. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2012-06-26T08:31:38Z
2012-06-26T08:31:38Z
2011
 
Type Article
 
Identifier SOLID STATE SCIENCES,13(1)168-174
1293-2558
http://dx.doi.org/10.1016/j.solidstatesciences.2010.11.008
http://dspace.library.iitb.ac.in/jspui/handle/100/14188
 
Language English