Multifunctional Triboelectric Textiles With Synergistically Photoinduced Enhanced Output Performance, Reprocessability, and Closed-Loop Recyclability.

The development of conventional polymer-based triboelectric materials (PTMs) faces two critical bottlenecks: the irreconcilable conflict between durability and recyclability, and the inherently limited interfacial charge generation and retention that constrain output performance. This study adopted a free radical copolymerization-thermally reversible Diels-Alder (DA) cascade reaction strategy, combined with viscosity regulation and in situ crosslinked electrospinning technology, to successfully fabricate a dynamically covalent crosslinked network-based PTM with CsPbBr3@KBr perovskite functional filler, resulting in multifunctional and synergistically optimized textile-based TENGs (DCCNF-based TENGs). Experimental results demonstrate that DCCNFs exhibit enhanced output performance, self-healing capability, photoluminescent and photoinduced-enhanced functions, and closed-loop recyclability. Compared with undoped DCCNF0, the DCCNF4-based TENG increased to approximately 2.25-fold, 5.78-fold, 3.13-fold, and 3.46-fold enhancements in terms of Voc, Isc, Qsc, and power density, respectively. Under UV and sunlight irradiation, the photoelectric-triboelectric coupling synergistic effect further significantly enhances the current density of the series DCCNF-based TENGs. Importantly, the output improvement is due to filler-induced dielectric modulation, enhanced surface charge trapping, and the photoelectric effect. Collectively, these DCCNF-based TENGs effectively address the dual bottlenecks of output performance and sustainability of triboelectric technology, while offering a versatile platform for next-generation sustainable smart wearable systems.