Ca3Co4O9 is a potential high temperature thermoelectric material. We explore the hydrothermal treatment improved sol-gel method to prepare Ca3Co4O9 thermoelectric materials. We find that this treatment can increase the thermoelectric performance of the samples compared with the conventional citric acid sol-gel method. We also find the samples prepared by the improved sol-gel method have more uniform grain distribution, better densification, and less voids. At about 1000K, compared with the conventional sol-gel method, the power factor of the samples prepared by improved sol-gel method improves about 168%.
CITATION STYLE
Hu, X., Li, Y., Wu, P., Zhang, S., & Huai, X. (2017). Effect of improved sol-gel method on composition and micro morphology of Ca3Co4O9. In EPJ Web of Conferences (Vol. 140). EDP Sciences. https://doi.org/10.1051/epjconf/201714013016
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