摘要
Wearable technologies have emerged as transformative tools in both daily life and healthcare. However, achieving optimal performance in wearable electronic devices necessitates energy sources that are efficient, convenient, and flexible—particularly under extreme conditions such as space exploration, military operations, and deep-sea environments. To address this critical need, a novel energy device technology based on wire-type supercapacitors. Graphene oxide (GO) was selected as the primary material due to its high specific surface area, excellent electrical conductivity, and robust mechanical properties [1]. To enhance the mechanical strength and integrity of the wire structure, single-walled carbon nanotubes (SWCNTs) were incorporated to bridge the GO sheets. The aligned and continuous nature of SWCNTs improves longitudinal mechanical behavior and electron transport, thereby reinforcing the structural integrity. We utilized nitric acid treatment to introduce hydrophilic functional groups. The two carbon materials were subsequently mixed, and ethylenediamine was added to facilitate the formation of a stable GO/SWCNTs slurry, which was injected into a capillary tube via a peristaltic pump and subjected to hydrothermal treatment in an autoclave [2]. The hydrothermal process induced secondary crystallization to synthesis a GO/SWCNTs fiber, as shown in Fig. 1(a)-(c) This fiber as the working electrode in a three-electrode system, with Ag/AgCl as the reference electrode, a platinum sheet as the counter electrode, and 0.5 M H₂SO₄(aq) as the electrolyte [3]. The GO/SWCNTs fiber developed in this study exhibited a capacitance of 2.7 mF/cm² (Fig. 2(a)). Compared with traditional conductive carbon fibers, this GO/SWCNTs supercapacitor fiber had better appearance, including their versatile morphology, high flexibility, and lightweight properties, as shown in Fig. 2(b) and Fig. 2(c). This GO/SWCNTs supercapacitor fiber of this study paves the way for the next-generation energy development and e-textile applications. The various technologies of this study provide some new research and development directions that can be for related industries. References 1. Fig. 1. (a) The cross section of GO/SWCNTs fiber, (b) Single-walled carbon nanotubes with the same orientation inside the GO/SWCNTs fiber electrode, (c)The physical dimension of GO/SWCNTs fiber specimen. Fig. 2. (a)The difference of supercapacitor properties of specimens of GO/SWCNTs supercapacitor fiber and regular conductive carbon fiber, (b) Bending GO/SWCNTs supercapacitor fiber, (c) Bend-less regular carbon fiber.