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2009 | 115 | 5 | 909-913
Article title

Electrical Properties of Co-Doped Ceria Electrolyte Ce_{0.8-x}Gd_{0.2}Sr_{x}O_{2-δ} (0.0 ≤ x ≤ 0.1)

Content
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EN
Abstracts
EN
Effects of strontium doping on electrical properties of gadolinium-doped ceria were investigated. The Ce_{0.8-x}Gd_{0.2}Sr_{x}O_{2-δ} (0.0 ≤ x ≤ 0.1) compositions were prepared by sol-gel method and sintered at 1300°C for 8 h, the bulk densities were over 93% of theoretical density. These results were consistent with scanning electron microscope. The crystallite size of these materials was determined using the X-ray powder diffractometer and the sizes range from 19.4 nm to 24.4 nm. From the experimental results, it was observed that the composition Ce_{0.8-x}Gd_{0.2}Sr_{x}O_{2-δ} (x=0.02) exhibits higher conductivity (23.6× 10^{-3} S cm^{-1}) and minimum activation energy (0.83 eV) at 700°C. This composition is thus a potential candidate for use as electrolyte applications in intermediate temperature solid oxide fuel cells.
Keywords
Year
Volume
115
Issue
5
Pages
909-913
Physical description
Dates
published
2009-05
received
2009-01-30
(unknown)
2009-03-30
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv115n511kz
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