Kim Minsu, Park Dabin, Kim Jooheon
School of Chemical Engineering & Materials Science, Chung-Ang University, Seoul 06974, Korea.
Department of Advanced Materials Engineering, Chung-Ang University, Anseong-si, Seoul 17546, Korea.
Polymers (Basel). 2021 May 9;13(9):1518. doi: 10.3390/polym13091518.
Herein, SbSe and β-CuSe nanowires are synthesized via hydrothermal reaction and water evaporation-induced self-assembly methods, respectively. The successful syntheses and morphologies of the SbSe and β-CuSe nanowires are confirmed via X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), and field emission transmission electron microscopy (FE-TEM). SbSe materials have low electrical conductivity which limits application to the thermoelectric generator. To improve the electrical conductivity of the SbSe and β-CuSe nanowires, polyaniline (PANI) is coated onto the surface and confirmed via Fourier-transform infrared spectroscopy (FT-IR), FE-TEM, and XPS analysis. After coating PANI, the electrical conductivities of SbSe/β-CuSe/PANI composites were increased. The thermoelectric performance of the flexible SbSe/β-CuSe/PANI films is then measured, and the 70%-SbSe/30%-β-CuSe/PANI film is shown to provide the highest power factor of 181.61 μW/m·K at 473 K. In addition, a thermoelectric generator consisting of five legs of the 70%-SbSe/30%-β-CuSe/PANI film is constructed and shown to provide an open-circuit voltage of 7.9 mV and an output power of 80.1 nW at ΔT = 30 K. This study demonstrates that the combination of inorganic thermoelectric materials and flexible polymers can generate power in wearable or portable devices.
在此，分别通过水热反应和水蒸发诱导自组装方法合成了SbSe和β-CuSe纳米线。通过X射线粉末衍射（XRD）、X射线光电子能谱（XPS）、拉曼光谱、场发射扫描电子显微镜（FE-SEM）和场发射透射电子显微镜（FE-TEM）证实了SbSe和β-CuSe纳米线的成功合成及其形态。SbSe材料的电导率较低，这限制了其在热电发电机中的应用。为了提高SbSe和β-CuSe纳米线的电导率，将聚苯胺（PANI）涂覆在其表面，并通过傅里叶变换红外光谱（FT-IR）、FE-TEM和XPS分析进行了确认。涂覆PANI后，SbSe/β-CuSe/PANI复合材料的电导率有所提高。然后测量了柔性SbSe/β-CuSe/PANI薄膜的热电性能，结果表明，70%-SbSe/30%-β-CuSe/PANI薄膜在473 K时提供了最高功率因数181.61 μW/m·K。此外，构建了一个由五条70%-SbSe/30%-β-CuSe/PANI薄膜制成的腿组成的热电发电机，在ΔT = 30 K时，该发电机提供了7.9 mV的开路电压和80.1 nW的输出功率。这项研究表明，无机热电材料和柔性聚合物的结合可以在可穿戴或便携式设备中发电。
