METHOD FOR PRODUCING POROUS THERMOELECTRIC MATERIAL, AND THERMOELECTRIC ELEMENT COMPRISING POROUS THERMOELECTRIC MATERIAL

The present invention relates to a porous thermoelectric material including fine pores, a method for producing same, and a thermoelectric element comprising the porous thermoelectric material and thus having improved thermoelectric performance. The present invention allows the size of pores included in a thermoelectric material and the porosity thereof to be easily controlled and, due to the regular pores included in the produced thermoelectric material, does not significantly decrease the electrical conductivity and Seebeck coefficient and yet significantly reduces the thermal conductivity, and thus can improve thermoelectric performance. La présente invention concerne un matériau thermoélectrique poreux comprenant des pores fins, un procédé de production associé et un élément thermoélectrique comprenant le matériau thermoélectrique poreux et présentant ainsi une performance thermoélectrique améliorée. La présente invention permet de réguler facilement la taille de pores inclus dans un matériau thermoélectrique et la porosité de ce dernier et, du fait des pores réguliers inclus dans le matériau thermoélectrique produit, ne réduit pas de manière significative la conductivité électrique et le coefficient Seebeck et réduit pourtant de manière significative la conductivité thermique, et peut ainsi améliorer une performance thermoélectrique. 본 발명은 미세 기공을 포함하는 다공성 열전재료 및 이의 제조방법, 상기 다공성 열전재료를 포함하여 열전 성능이 개선된 열전 소자에 관한 것이다. 본 발명에서는 열전 재료 내 포함되는 기공크기와 기공도(porosity) 조절이 용이하고, 제조된 열전 재료 내 함유된 규칙적인 기공으로 인하여 전기전도도와 제백계수를 크게 저하시키지 않으면서 열전도도를 크게 감소시켜 열전 성능을 향상시킬 수 있다.