20.500.12556/RUL-167085 Flash graphene from carbon fiber composites a sustainable and high-performance electrocatalyst for hydrogen peroxide production Carbon fiber-reinforced polymer (CFRP) composites are indispensable in various industries due to their exceptional strength-to-weight ratio, outstanding durability, and high stiffness. However, the effective recycling of CFRP remains a major challenge and requires the development of advanced technologies and more sustainable waste management solutions. In this study, we present an efficient and reproducible method for upcycling CFRP waste into large quantities of carbon fiber composite flash graphene (CFC-FG) by cost-effective flash Joule heating (FJH) in the millisecond range. The resulting flash graphene was extensively characterized by morphological, structural, spectroscopic, and chemical analyses. These investigations revealed a highly porous, lamellar structure with a low concentration of oxygen functional groups and a turbostratic graphitic structure. Important structural features, including a distinct D’ peak in Raman spectra and elliptical ring patterns observed in selected area electron diffraction (SAED), emphasized its unique properties. These combined attributes of CFC-FG resulted in excellent electrochemical performance in the two-electron oxygen reduction reaction (2e$^−$ ORR) for the electrosynthesis of hydrogen peroxide (H$_2$O$_2$). CFC-FG showed nearly 100 % selectivity and good activity in 0.1 M KOH, with stability tests confirming the retention of performance, making it a promising candidate for real electrosynthesis applications. The core concept of this work was to develop a recycled, sustainable electrocatalyst for H$_2$O$_2$ electrosynthesis that contributes to a circular economy and supports global sustainability goals. flash graphene flash Joule heating carbon fiber composite carbon materials hydrogen peroxide electrochemical synthesis upcycling sustainability bliskoviti grafen bliskovito Joulovo segrevanje kompoziti iz ogljikovih vlaken ogljikovi materiali vodikov peroksid elektrokemijska sinteza predelava trajnost true false true Angleški jezik Slovenski jezik Članek v reviji 2025-02-07 09:18:08 2025-02-07 09:18:10 2025-02-08 04:03:17 0000-00-00 00:00:00 2025 0 0 9 str. Vol. 517, art. 145754 20 Mar. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.35:620.3:66.097.3 0013-4686 10.1016/j.electacta.2025.145754 225283075 1-s2.0-S0013468625001173-main.pdf 1-s2.0-S0013468625001173-main.pdf 1 0628C0AB0F8D12F0440DD607209C9D1A 8b961885e67e857947cfbac491672c0685c0e30fd6ae934ddeb201d7d3491da3 3f049910-e52c-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=199251 https://www.sciencedirect.com/science/article/pii/S0013468625001173 1 34cd77ae-e52b-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=199250 Fakulteta za kemijo in kemijsko tehnologijo Fakulteta za strojništvo 0 0 0