Yarn-shaped supercapacitor and two-electrode one-step electro-deposition preparation method thereof

The invention belongs to the technical field of energy storage devices, and particularly relates to a yarn-shaped supercapacitor and a two-electrode one-step electro-deposition preparation method thereof. According to the method, conductive carbon filaments serve as a base material, TPU nanofibers are electrostatically spun on the surfaces of the conductive carbon filaments, manganese dioxide is electrodeposited on the surfaces of the conductive carbon filaments through a chronoamperometry method, and finally the integrated linear yarn-shaped supercapacitor is obtained through electrolyte pouring and pipe opening packaging. The preparation method can be extensively applied to the field of flexible and wearable energy storage devices. The method has the advantages that the process is simple, operation is convenient, materials are common, the device is endowed with linearity, flexibility and braiding performance, meanwhile, series connection and parallel connection can be achieved easily, and the energy storage