Size Dependence of Transport Property in Cei_xZrx02 (x = 0.2-0.8) Solid Solution
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Date
2012
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Abstract
Nanosized ceria doped zirconia solid solution is the material of attraction for
the intermediate temperature solid oxide fuel cell. A systematic study has been
carried out on Cei.xZrx02 with the composition of x = 0.2, 0.4, 0.5, 0.6, 0.8 by
co-precipitation method. Structural elucidations were made through XRD to
ascertain the attainment of phase and nano-crystallite size. The electrical
properties of Cei.xZrx02, employing ac impedance spectroscopy, show that the
size dependence brings change in transport property. The reduction in size
brings higher grain boundary impedance which is a contrary behavior
observed in nanosized particles.