Bi 0.4 Sb 1.6 Te 3 /TiO 2 –]Ag nanocomposites were fabricated using a chemical plating method and then compacted via spark plasma sintering at 673 K and 50 MPa for 5 min. The effects of TiO 2 –]Ag nanoparticles (NPs) dispersed into Bi 0.4 Sb 1.6 Te 3 on the thermoelectric and mechanical properties were investigated. The results demonstrated that the carrier concentration and electrical conductivity increased by the incorporation of TiO 2 –]Ag NPs. Moreover, the addition of TiO 2 –]Ag NPs also changed the Fermi level positions and the maximum ZT could be obtained in the temperature range of 300–500 K. The maximum ZT value for a Bi 0.4 Sb 1.6 Te 3 /TiO 2 –]Ag (0.25 wt%) sample was 1.19 at 375 K due primarily to a significant increase in the power factor and an appropriate thermal conductivity. Consequently, the thermoelectric and mechanical properties were improved by embedding the TiO 2 –]Ag NPs into the Bi 0.4 Sb 1.6 Te 3 matrix.
|Number of pages||7|
|Publication status||Published - 2019 Jun|
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry