Thermoelectric properties of p-type CoSb3 nanocomposites with dispersed CoSb3 nanoparticles

Abstract

Articles you may be interested inTheoretical and experimental approach on dielectric properties of ZnO nanoparticles and polyurethane/ZnO nanocomposites J. Appl. Phys. 112, 054106 (2012); 10.1063/1.4749414 Improved thermoelectric performances in nano-Co0.97Pd0.03Sb3 AIP Conf.CoSb 3 nanocomposites with different contents of CoSb 3 nanoparticles were prepared by mixing nanosized CoSb 3 particles obtained via polyol method and micron-sized particles obtained via solid state reaction. X-ray diffractometer and field emission scanning electron microscope were used to characterize the prepared products. The thermoelectric properties of the nanocomposites with different amounts of nanoparticles as dispersants were measured from room temperature to around 500°C. Due to the grain boundaries scattering, the lattice thermal conductivity was observed to decrease as the amount of nanoparticles increased. The electrical properties were also improved by the addition of nanoparticles. The ZT value of the nanocomposites with 10 wt % of nanoparticles was nearly doubled that of the sample without any nanoparticles.

Influence of Ball-Milling, Nanostructuring, and Ag Inclusions on Thermoelectric Properties of ZnSb

“…At 300 K the thermal conductivity was reduced by 40% for the ball-milled sample without Ag additions. This is in line with results on other materials, where reductions of 50% in BiSbTe 10 and 60% in CoSb 3 16 have been reported. Adding Ag particles to the ballmilling of ZnSb did not yield any further reductions in the thermal conductivity in the present case.…”

Effects of Co:Sb Molar Ratio on Synthesis and Properties of Undoped CoSb3 Prepared via a Polyol Method

“…4 In fact, in our earlier work, we successfully synthesized CoSb 3 nanostructures via a polyol method and showed that reduction in thermal conductivity was achieved. 5,6 Hence, in this work, our motivation is to enhance TE performance further by improving the electrical properties of nanostructured CoSb 3 through adjusting the Co and Sb composition in the compound.…”

Fabrication and characterization of nanostructured thermoelectric FexCo1-xSb3

“…Skutterudites have an effective TE operational range from 650K to 950 K. Among the different types of skutterudites compounds, CoSb 3 based members have attracted by far the greatest interest because of constituents' abundant availability and less cost [7]. Iron substituted CoSb 3 , FexCo 1-x Sb 3 , have been reported to display good performance as a p-type TE material, in terms of its TE figure of merit (ZT), and abundance of the constituent elements [8][9][10][11][12][13][14]. The ZT can be improved via introduction of dopants, nanoengineering and in case of skutterudites, introducing rare earth elements in the crystal cages to reduce the thermal conductivity [1,[4][5][6] due to rattling of the fillers.…”