Artigas-Arnaudas, JoaquínSánchez, MaríaUreña, Alejandro2025-05-232025-05-232025-05-02Artigas-Arnaudas J, Sánchez M, Ureña A. Synthesis of ZIF-8 and ZIF-L on carbon fiber fabric for supercapacitor structural electrodes. Polym Compos. 2025; 1-13. doi:10.1002/pc.297201548-0569 (online)0272-8397 (print)https://hdl.handle.net/10115/87177This work was supported by the Agencia Estatal de Investigación [Project MULTISENS PID2022-136636OB-I00].One potential solution to the problem of energy storage in certain transportation vehicles is the development of multifunctional materials. Specifically, structural supercapacitors offer a combination of mechanical strength and energy storage capabilities, which could replace vehicle components and reduce overall vehicle weight. However, structural electrodes made from carbon fiber face a significant limitation due to their low specific surface area. This study examines the direct synthesis of metal-organic frameworks on the surface of carbon fibers. Structures such as ZIF-8 and ZIF-L can be easily synthesized from the same metal-organic precursors and exhibit high surface areas, making them ideal for this application. Both ZIF structures form a continuous coating on the carbon fiber, increasing the specific surface area of the electrodes. For the ZIF-8 structure, the coating achieves a thickness of 1 μm and a specific surface area of 30.24 m2/g. In contrast, the sheet-like geometry of the ZIF-L results in greater thicknesses, though with a lower specific surface area of only 0.7 m2/g. The potential use of these electrodes in supercapacitor devices has been demonstrated through the assembly of structural supercapacitors with a polymeric solid electrolyte. The supercapacitor with ZIF-8 electrodes has achieved a specific capacitance of 7.78 mF/g. Despite the limitations associated with internal resistance, all structural electrodes have shown stability over charge and discharge cycles.enAttribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/carbon fiberenergy storagemetal–organic frameworkstructural supercapacitorZIF-8Article10.1002/pc.29720info:eu-repo/semantics/openAccess