Despite the significant progress in thermoelectric composites in recent years, composite systems completely composed of one-dimensional (1D) and two-dimensional (2D) nanostructures are rarely reported. In this study, the thermoelectric composites are prepared using 2D nanobelts of SnSe, obtained by a chemically exfoliation process (solvothermal lithium-intercalation and subsequent exfoliation), and 1D single-walled carbon nanotubes (SWCNTs) via a facile solution mixing and subsequent vacuum filtration method. The thermoelectric performance of the SnSe nanobelt/SWCNT composite films are further improved by post-treatment of thermal annealing. An optimized power factor at room temperature of 145 ± 28 μW m⁻¹ K⁻² for the composite film with 80 wt% SWCNTs has been realized, which is much higher than that of either component. The results inspire a new insight into the SnSe-related thermoelectric composites, laying a foundation for the fabrication of high-performance thermoelectric composites in the future.

尽管近年来在热电复合材料方面取得了显着进展，但很少报道完全由一维（1D）和二维（2D）纳米结构组成的复合系统。在这项研究中，热电复合材料是使用通过化学剥离工艺（溶剂热锂嵌入和随后剥离）获得的SnSe二维纳米带制备的，并通过方便的溶液混合和随后的真空过滤获得一维单壁碳纳米管（SWCNT）方法。SnSe纳米带/ SWCNT复合膜的热电性能通过热退火的后处理得到进一步改善。室温下的最佳功率因数为145±28μWm ^-1  K ^-2已经实现了具有80wt％SWCNT的复合膜的制备，其远高于任何一种组分。这些结果激发了对与SnSe相关的热电复合材料的新见解，为将来制造高性能热电复合材料奠定了基础。