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http://dx.doi.org/10.4191/KCERS.2008.45.1.782

Nanocomposite Ni-CGO Synthesized by the Citric Method as a Substrate for Thin-film IT-SOFC  

Wang, Zhenwei (Central Research Institute of Electric Power Industry)
Liu, Yu (Shanghai Institute of Ceramics, Chinese Academy of Sciences)
Hashimoto, Shin-ichi (Tohoku University)
Mori, Masashi (Central Research Institute of Electric Power Industry)
Publication Information
Journal of the Korean Ceramic Society / v.45, no.12, 2008 , pp. 782-787 More about this Journal
Abstract
Ni-ceria cermets have been extensively investigated as candidates for the anode in intermediate-temperature solid oxide fuel cells. We have used the citric method to synthesize nanocomposite powders consisting of NiO (Ni metal content: $40{\sim}60%$ by volume) highly dispersed in $Ce_{0.9}Gd_{0.1}O_{1.95}$ (CGO). The microstructure characteristics and sintering behaviors of the nanocomposites were investigated. No impurity phases were observed and the shrinkage of these substrates matched well with that of a CGO electrolyte with a specific surface area of $11\;m^2/g$. Densification of the CGO electrolyte layer to $<5\;{\mu}m$ thickness was achieved by co-firing the laminated electrolyte with the porous NiO-CGO substrate at $1400^{\circ}C$ for 6 h.
Keywords
SOFC; Anode; NiO; Ceria; Citric method; Sintering characteristics;
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