Nanofibers have attracted attention in the field of thermoelectric (TE) because of their remarkable properties; abundance, lightweight with the high-surface area-to-volume ratio, low thermal conductivity, mechanically stable, and non-toxic. In applications, like TE wearable device for energy harvesting, development of new composite nanofibers holds more significant potential with the targeted specifications. In our research, we have investigated for the first-time fiber nanocomposites for the application of wearable power generator in terms of TE energy. The electrospun technique attracts in the development of nanostructured materials in the field of thermoelectric power generation. The significance of this paper is to flourish the wearable device materials of 1D vanadium oxide/tin oxide (V₂O₅/SnO₂) composite nanofibers synthesized using sol–gel method followed by electrospinning process. The structural and morphology properties of SnO₂ fibers belong to tetragonal structure and nanocomposite relates to tetragonal (SnO₂) and orthorhombic (V₂O₅) structure, diameter in the range of 100–400 nm. The high-surface area to volume ratio of nanofiber allowed more significant phonon scattering and enhance the efficiency. The nanofiber exhibits the outstanding TE properties of the Seebeck coefficient and power factor of 20–100 V/K and 0.3–1.6 µW/K²m at room temperature to 400 K, which is the highest among the fiber SnO₂ and its composites. The nanofibers integration on wearable devices paves the way towards ultralight, thermally stable, tunable density and mechanically flexibile are unique, where nanocomposite offers a new opportunity to thermoelectric applications.

纳米纤维由于其卓越的性能而在热电（TE）领域引起了关注。丰富，重量轻，表面积与体积比高，导热系数低，机械稳定且无毒。在应用中，例如用于能量收集的TE可穿戴设备，新型复合纳米纤维的开发在目标规格方面具有更大的潜力。在我们的研究中，我们从TE能量的角度出发，首次研究了可穿戴式发电机应用中的纤维纳米复合材料。电纺技术吸引了热电发电领域中纳米结构材料的发展。本文的意义在于丰富一维氧化钒/氧化锡（V ₂ O ₅/ SnO ₂）复合纳米纤维采用溶胶-凝胶法合成，然后进行电纺丝工艺。SnO ₂纤维的结构和形态性质属于四方结构，纳米复合物涉及四方（SnO ₂）和正交晶（V ₂ O ₅）结构，直径在100-400 nm范围内。纳米纤维的高表面积体积比允许更大的声子散射并提高效率。纳米纤维展现出杰出的TE特性，在室温至400 K时，塞贝克系数和功率因数为20–100 V / K和0.3–1.6 µW / K ² m，这在纤维SnO _2中是最高的及其复合材料。纳米纤维在可穿戴设备上的集成为超轻，热稳定，可调密度和机械柔韧性的发展铺平了道路，纳米复合材料为热电应用提供了新的机会。