Processing of advanced thermoelectric materials

Comparing the role of annealing on the transport properties of polymorphous AgBiSe2 and monophase AgSbSe2

“…Thermoelectric materials, capable of converting waste heat to electrical energy, have received extensive interest. [1][2][3][4][5][6] The energy conversion efficiency of a thermoelectric device is dependent on the dimensionless gure of merit (ZT) of the component materials. ZT is generally dened as ZT ¼ a 2 T/rk, where T is the absolute temperature, a is the Seebeck coefficient, r is the electrical resistivity, and k is the thermal conductivity.…”

Preparation and thermoelectric properties of Cu1.8S/CuSbS2 composites

“…Cu 1.8 S powder was mixed with CuSbS 2 powder in a mole ratio of (1-x)CuSbS 2 -xCu 1.8 S at 200 rpm for 0.5 h, where x was fixed at 0, 0.1, 0.2, and 0.3. The corresponding powders were sintered at 723 K for 5 min in a Φ = 20 mm graphite mould under an axial pressure of 50 MPa in a vacuum using SPS system (Sumitomo SPS1050, Japan) to obtain the bulk samples [17].…”

Oxidation Protective Hybrid Coating for Thermoelectric Materials

“…A considerable effort has been made to produce materials with high figure of merit, and several compounds have been identified and improved using different approaches: doping elements; composites; nanostructuring; and mesostructuring [ 3 , 4 , 8 ]. The effect of conventional synthesis and sintering techniques have been evaluated [ 9 ] and innovative methods are constantly under development [ 10 , 11 , 12 , 13 , 14 ]. One of the main challenges in the thermoelectrics field is the identification of efficient materials that are inexpensive, easy to be produced, and formed of earth-abundant and environmentally friendly elements.…”