Composite thermoelectric material and preparation method thereof

The invention discloses a composite thermoelectric material and a preparation method thereof. The method for preparing the composite thermoelectric material comprises the steps of: adding carbon nanotubes and polyfluorobenzodifurandione to a ball mill for ball milling to obtain a composite powder; and subjecting the composite powder to cold pressing to obtain the composite thermoelectric material. The preparation method of the composite thermoelectric material of the invention does not use an organic solvent in the preparation process, and is friendly to environment, low in cost, simple in process, and suitable for large-scale industrial production. The prepared composite thermoelectric material has good thermoelectric performance. 本发明公开了一种复合热电材料及其制备方法。其中，所述复合热电材料制备方法包括步骤：将碳纳米管和聚氟代苯并二呋喃二酮加入到球磨机中进行球磨处理，得到复合粉末；将所述复合粉末进行冷压处理，得到复合热电材料。本发明所述复合热电材料的制备方法在制备过程中不使用有机溶剂，是一种环保、低成本、工艺简单、适合大规模工业生产的方法，并且所制备得到的复合热电材料具有良好的热电性能。