Enhanced thermoelectric performance of Bi0.3Sb1.7Te3 based alloys by dispersing TiC ceramic nanoparticles

Comprehensive Insight into p-Type Bi2Te3-Based Thermoelectrics near Room Temperature

“…The typical nanoinclusions have been incorporated in (Bi, Sb) 2 Te 3 alloys, as listed in Table . ,,,− In addition, the second phase within the matrix act as a pinning site during the compaction according to the Zener pinning effect as expected . The significant inhibition of grain growth has been observed via the dispersion of nanoparticles in the matrix, such as Y 2 O 3 , TiC, and Te, ,, which will result in the grains being refined, thereby further reducing the lattice thermal conductivity (Figure b,c).…”

“…41,117,118,160−177 In addition, the second phase within the matrix act as a pinning site during the compaction according to the Zener pinning effect as expected. 178 The significant inhibition of grain growth has been observed via the dispersion of nanoparticles in the matrix, such as Y 2 O 3 , TiC, and Te, 98,160,179 which will result in the grains being refined, thereby further reducing the lattice thermal conductivity (Figure 12b,c). High-density materials are always pursued, even theoretical densities, for higher thermoelectric and mechanical properties.…”

Direct ink writing of high-performance Bi2Te3-based thermoelectric materials using quasi-inorganic inks and interface engineering

“…3a and b), which is consistent with the behavior of bulk Bi 2 Te 3 -based materials. 39–41 Notably, the maximum σ values of both p-type/QI and n-type/QI are much larger than those of p-type/DMF and n-type/DMF. Since the raw materials for preparing quasi-inorganic and DMF-based inks are the same Bi 2 Te 3 -based particles, carrier concentrations are similar for both p- and n-type printed samples (Fig.…”

Effect of Bi Nanoprecipitates on the Thermoelectric Properties of Bi‐Sb‐Te/Sb2O3 Nanocomposites

“…Bismuth telluride (Bi 2 Te 3 ) based alloys have been a classical thermoelectric material for near room‐temperature applications, both due to their high conversion efficiency and commercial upscaling maturity. [ 14,15 ] BiSbTe alloys in particular are the most studied inorganic p‐type thermoelectric materials; therefore, much effort has been devoted to enhancing their thermoelectric properties, such as reduction of the lattice thermal conductivity, [ 16 ] optimization of charge carrier concentration, [ 17 ] and hybridization with a second phase (usually a nanomaterial):, for example, Sb 2 O 3 , [ 18 ] AgSbSe 2 , [ 19 ] Si, [ 20 ] Te, [ 21 ] LaFeSi, [ 22 ] AgSbTe 2 , [ 23 ] BaTiO 3 , [ 24 ] MgO/VO 2 , [ 25 ] AgBiSe 2 , [ 26 ] Sb 2 Te 3 , [ 27 ] SiO 2 , [ 28 ] Y 2 O 3 , [ 29 ] Zn 4 Sb 3 , [ 30 ] SiC, [ 31 ] TiC, [ 32 ] ZnO, [ 33 ] ZnAlO, [ 34 ] Pr 6 O 11 , [ 35 ] CuGaTe 2 , [ 36 ] Cu 3 SbSe 4 , [ 37 ] ZnTe, [ 38 ] ZrO 2 , [ 39 ] Ta 2 O 5 , [ 40 ] amorphous B, [ 41 ] graphene, [ 42 ] and C fibres. [ 43,44 ] Moreover, various nanoengineering approaches, such as severe plastic deformation and melt spinning, have been used to improve the thermoelectric performance of BiSbTe alloys.…”