Thermoelectric (TE) material nanocomposite film is widely used in the design of many kinds of wearable flexible device and portable sensors. Herein, BNNT/Bi₂Te₃ and BCNNT/Bi₂Te₃ TE nanocomposite films were successfully fabricated by a cost-effective hot pressing and millipore membrane filter (HPMMF) method. Their thermoelectric performance was systematically investigated at room temperature, the highest power factor of the TE nanocomposite film was 1843.2 nW/mK² when the film contained 0.006 wt.% BCNNT. The Seebeck coefficient of the thermoelectric nanocomposite film will reach up 205 μV/K. The power factor of BCNNT/Bi₂Te₃ TE nanocomposite film is 17.2 times higher than that of BNNT/Bi₂Te₃ nanocomposite film and 14 times higher than that of Bi₂Te₃ film. It is promising to be used in many situations such as flexible wearable device and solar cell thermoelectric power generation.

Graphical abstract

热电（TE）材料纳米复合膜被广泛用于多种可穿戴柔性设备和便携式传感器的设计中。本文中，通过具有成本效益的热压和微孔膜滤器（HPMMF）方法成功地制造了BNNT / Bi ₂ Te ₃和BCNNT / Bi ₂ Te ₃ TE纳米复合膜。在室温下系统地研究了它们的热电性能，当TE纳米复合膜包含0.006 wt。％的BCNNT时，其最高功率因数为1843.2 nW / mK ²。热电纳米复合膜的塞贝克系数将达到205μV/ K。BCNNT / Bi ₂ Te ₃的功率因数TE纳米复合膜比BNNT /铋的高17.2倍₂碲₃纳米复合膜和比的Bi 14倍₂碲₃膜。有望在许多情况下使用，例如柔性可穿戴设备和太阳能电池热电发电。

图形概要