Middle-high temperature thermoelectric module
2014
The invention relates to a middle-high temperature thermoelectric module. The middle-high temperature thermoelectric module comprises at least one group of thermoelectric pair, wherein the thermoelectric pair comprises two thermoelectric blocks connected through an insulating supporting plate; an electrode formed on a high temperature end surface of the thermoelectric pair; a diffusion blocking protection layer formed at least on the surface of the thermoelectric pair and/or the surfaces of the two thermoelectric blocks; an anti-oxidation layer formed at least on the surface of the thermoelectric pair and/or the surfaces of the two thermoelectric blocks; and an aerogel thermal insulation layer filling a gap of the at least one group of thermoelectric pair. The thermoelectric module provided by the invention simultaneously has the performance of sublimation prevention, anti-oxidation, heat insulation and the like, and the thermoelectric performance and the efficiency of the thermoelectric module are improved; in addition, the thermoelectric module has a self-protection function when working under conditions relating to corrosive gas, moist, chemical medium corrosion, temperature cold-hot alternation and the like.
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