| abstract |
The invention discloses a method for preparing a silver-selenide ternary compound polycrystalline block material with high thermoelectric performance, and uses a hydrothermal reaction method to synthesize Ag x MSe y (M is selected from any one of Sn, Cr, Bi, Ga and Al species) black nano-powder, which is further heat-treated in an atmosphere tube furnace, and then doped with halogen atoms at a high temperature after vacuum sealing of a quartz tube to optimize its thermoelectric properties, and then undergoes a hot-pressing sintering process to obtain high thermoelectric properties The Ag x MSe y polycrystalline bulk material, the synthesis process of this method is simple, the raw material resources used are abundant, the product purity is high, the high temperature performance of the sample is stable, and it is a thermoelectric power generation material with high thermoelectric performance. |