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Textile-based electronic devices have attracted increasing interest in recent years due to their wearability, breathability, and comfort. Among them, textile-based triboelectric nanogenerators (T-TENGs) exhibit remarkable advantages in mechanical energy harvesting and self-powered sensing. However, there are still some key challenges to the development and application of triboelectric fibers (the basic unit of T-TENG). Scalable production and large-scale integration are still significant factors hindering its application. At the same time, there are some difficulties to overcome in the manufacturing process, such as achieving good stretchability and a quick production, overcoming incompatibility between conductive and triboelectric materials. In this study, triboelectric fibers are produced continuously by one-step coaxial wet spinning. They are only 0.18 mm in diameter and consist of liquid metal (LM) core and polyurethane (PU) sheath. Due to the good mechanical properties between them, there is no interface incompatibility of the triboelectric fibers. In addition, triboelectric fibers can be made into large areas of T-TENG by means of digital embroidery and plain weave. The T-TENGs can be used for energy harvesting and self-powered sensing. When they are fixed on the forearm can monitor various strokes in badminton. This work provides a promising strategy for the large-scale fabrication and large-area integration of triboelectric fibers, and promotes the development of wearable T-TENGs. [ABSTRACT FROM AUTHOR]

Highlights: Triboelectric nanogenerator (TENG)/carbon dots-TNs supported over three-dimensional graphene aerogel (3DGA@CDs-TNs) system was constructed. TENG and 3DGA@CDs-TNs present excellent degradation activity toward brilliant green (88.26%, 40 min) and direct blue 5B (89.6%, 90 min). The coupling interaction of photocatalysis and TENG leads to an enhanced removal ability. The degradation pathways for brilliant green and direct blue 5B are proposed.It is of great importance to explore a creative route to improve the degradation efficiency of organic pollutants in wastewater. Herein, we construct a unique hybrid system by combining self-powered triboelectric nanogenerator (TENG) with carbon dots-TiO2 sheets doped three-dimensional graphene oxide photocatalyst (3DGA@CDs-TNs), which can significantly enhance the degradation efficiency of brilliant green (BG) and direct blue 5B (DB) owing to the powerful interaction of TENG and 3DGA@CDs-TNs photocatalyst. The power output of TENG can be applied for wastewater purification directly, which exhibits a self-powered electrocatalytic technology. Furthermore, the results also verify that TENG can replace conventional electric catalyst to remove pollutants effectively from wastewater without any consumption. Subsequently, the unstable fragments and the plausible removal pathways of the two pollutants are proposed. Our work sheds light on the development of efficient and sustainable TENG/photocatalyst system, opening up new opportunities and possibilities for comprehensive utilization of random energy. [ABSTRACT FROM AUTHOR]