We report the thermoelectric properties of flexible Bi₂Se₃-Polyvinylidene fluoride (PVDF) based polymer nanocomposites (PNC) over a temperature range from 250 K to 350 K. The two-dimensional Bi₂Se₃with nanoplate like structure is synthesized using the reflux method and is dispersed with the PVDF matrix. A significant reduction in the thermal conductivity of the PNC in comparison to the individual phases of Bi₂Se₃ and PVDF is observed. The overall thermal conductivity value of the PNC is measured to be 0.06 W/m-K at 300 K. An order of magnitude reduction in the thermal conductivity in the PNC is explained using the acoustic impedance model. The Seebeck coefficient and the electrical conductivity are decreasing with the addition of PVDF to Bi₂Se₃. The figure of merit of PNC is determined to be about 0.004 at 300 K, and the flexible nature of Bi₂Se₃-PVDF nanocomposites is also demonstrated. The mechanical properties of the PNC are quantitatively measured using nanoindentation technique.

我们报告了在250 K至350 K的温度范围内，柔性Bi ₂ Se _3-聚偏二氟乙烯（PVDF）基聚合物纳米复合材料（PNC）的热电性能。使用纳米碳管合成了具有纳米板状结构的二维Bi ₂ Se ₃。回流法并与PVDF基质分散。与Bi ₂ Se ₃的各个相相比，PNC的导热系数显着降低观察到PVDF。在300 K下测得PNC的总导热系数值为0.06 W / mK。使用声阻抗模型解释了PNC中导热系数下降的数量级。向Bi ₂ Se _3中添加PVDF后，塞贝克系数和电导率均降低。PNC的品质因数在300 K下确定为约0.004，并且还证明了Bi ₂ Se ₃ -PVDF纳米复合材料的柔性。使用纳米压痕技术定量测量PNC的机械性能。