Two-dimensional (2D) nanomaterials have been widely used as advanced functional materials due to their special nanostructures and various functionalities. Researchers working on 2D nanomaterials are facing several problems, the difficulties in synthesis, scarcity of species, largely unclear formation mechanism and non-universal preparation method. Herein, this paper reports a new method based on electrospinning to fabricate 2D inorganic materials (titanium dioxide) with thickness around 20 nm and width/thickness ratio of >50. These 2D nanobelts TiO₂ could enhance the dielectric performance of PVDF based composites much more significantly, and the energy density of 12.45 J/cm³ could be easily achieved with a small volume fraction (3 vol%) of the nanobelts. Such method has many advantages such as safe production, low production cost, and continuous production. More importantly, this approach is potential to become a universal method to fabricate a range of 2D inorganic nanomaterials in the future due to its universality.

二维（2D）纳米材料因其特殊的纳米结构和各种功能而被广泛用作高级功能材料。研究二维纳米材料的研究人员面临着几个问题，包括合成困难，物种稀缺，形成机理很大程度上不明确以及制备方法不通用。本文中，本文报道了一种新的基于静电纺丝的方法，以制造厚度约为20 nm且宽度/厚度比> 50的2D无机材料（二氧化钛）。这些二维纳米带TiO ₂可以显着提高PVDF基复合材料的介电性能，并且能量密度为12.45 J / cm ³使用少量的纳米带（3体积％）可以轻松实现。这种方法具有许多优点，例如安全生产，低生产成本和连续生产。更重要的是，由于其通用性，这种方法有可能在将来成为制造一系列2D无机纳米材料的通用方法。