| Nanocomposite Ni-CGO Synthesized by the Citric Method as a Substrate for Thin-film IT-SOFC |
| Zhenwei Wang, Yu Liu1, Shin-ichi Hashimoto2, Masashi Mori |
Central Research Institute of Electric Power Industry
1Shanghai Institute of Ceramics, Chinese Academy of Sciences
2Tohoku University |
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| ABSTRACT |
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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. |
| Key words:
SOFC, Anode, NiO, Ceria, Citric method, Sintering characteristics |
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