|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials for Energy Conversion and Storage
||Microstructure and Thermoelectric Properties of Se/Te-doped CoSb3 Skutterudites Synthesized by Self-propagating High-temperature Synthesis
||Miroslaw Jakub Kruszewski, Lukasz Ciupinski, Radoslaw Zielinski, Rafal Zybala, Marcin Chmielewski
|On-Site Speaker (Planned)
||Miroslaw Jakub Kruszewski
In this work, the application of self-propagating high-temperature synthesis (SHS) for thermoelectric compounds fabrication has been reported. SHS is a self-sustaining, ultrafast and scalable method that exploits highly exothermic reaction between elemental reactants to heat and thus compound the neighboring volumes of the sample. Se/Te-doped n-type CoSb3 skutterudites were successfully prepared by SHS followed by pulse plasma sintering (PPS) for the first time. All samples after the consolidation exhibited near theoretical density. X-ray diffraction analysis revealed only CoSb3 phase in all samples. Thermoelectric properties such as Seebeck coefficient, electrical resistivity and thermal conductivity were investigated over the temperature range of 323-723 K. It was found that ultrafast SHS-PPS synthesis route is very promising and capable of fabrication of doped skutterudites with enhanced thermoelectric properties. The figure of merit (ZT) of the synthesized material reached value of 1 which is comparable to values reported in other studies.