Reinvestigation thermoelectric properties of CuAlO2

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Abstract

Bulk CuAlO2 delafossite has been synthesized by solid state reaction to reinvestigate the thermoelectric properties. The electrical conductivity, Seebeck coefficient and thermal conductivity were measured in a high temperature range of 300 to 960 K. The result of positive sign of Seebeck coefficient confirms p-type nature of CuAlO2 compund. The results of bulk sample for Seebeck coefficient, the electrical conductivity and thermal conductivity are range of 900 to 300 μV/K, of 0.01 to 2 S/cm, and of 3.5 W/mK to 1.5 W/mK. The maximum ZT value of bulk sample is 0.017 at a 960 K. These results can be concluded that the bulk CuAlO2 by solid state state displays thermoelelctric material.

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Ruttanapun, C., Kosalwat, W., Rudradawong, C., Jindajitawat, P., Buranasiri, P., Naenkieng, D., … Wichainchai, A. (2014). Reinvestigation thermoelectric properties of CuAlO2. In Energy Procedia (Vol. 56, pp. 65–71). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2014.07.132

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