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http://dx.doi.org/10.4191/kcers.2016.53.5.469

Nanomaterials for Advanced Electrode of Low Temperature Solid Oxide Fuel Cells (SOFCs)  

Ishihara, Tatsumi (International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University)
Publication Information
Journal of the Korean Ceramic Society / v.53, no.5, 2016 , pp. 469-477 More about this Journal
Abstract
The application of nanomaterials for electrodes of intermediate temperature solid oxide fuel cells (SOFC) is introduced. In conventional SOFCs, the operating temperature is higher than 1073 K, and so application of nanomaterials is not suitable because of the high degradation rate that results from sintering, aggregation, or reactions. However, by allowing a decrease of the operating temperature, nanomaterials are attracting much interest. In this review, nanocomposite films with columnar morphology, called double columnar or vertically aligned nanocomposites and prepared by pulsed laser ablation method, are introduced. For anodes, metal nano particles prepared by exsolution from perovskite lattice are also applied. By using dissolution and exsolution into and from the perovskite matrix, performed by changing $P_{O2}$ in the gas phase at each interval, recovery of the power density can be achieved by keeping the metal particle size small. Therefore, it is expected that the application of nanomaterials will become more popular in future SOFC development.
Keywords
Fuel Cells; Electrodes; Nanocomposites; Perovskites;
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