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Flash graphene from carbon fiber composites: A sustainable and high-performance electrocatalyst for hydrogen peroxide production
Electrochimica Acta ( IF 5.5 ) Pub Date : 2025-01-26 , DOI: 10.1016/j.electacta.2025.145754
Ivo Bardarov, Desislava Yordanova Apostolova, Pedro Martins, Ivo Angelov, Francisco Ruiz-Zepeda, Ivan Jerman, Matevž Dular, Dušan Strmčnik, Boštjan Genorio
Electrochimica Acta ( IF 5.5 ) Pub Date : 2025-01-26 , DOI: 10.1016/j.electacta.2025.145754
Ivo Bardarov, Desislava Yordanova Apostolova, Pedro Martins, Ivo Angelov, Francisco Ruiz-Zepeda, Ivan Jerman, Matevž Dular, Dušan Strmčnik, Boštjan Genorio
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 (H2O2). 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 H2O2 electrosynthesis that contributes to a circular economy and supports global sustainability goals.
中文翻译:
来自碳纤维复合材料的闪蒸石墨烯:一种用于生产过氧化氢的可持续高性能电催化剂
碳纤维增强聚合物 (CFRP) 复合材料具有卓越的强度重量比、出色的耐用性和高刚度,因此在各个行业中都是不可或缺的。然而,CFRP 的有效回收仍然是一项重大挑战,需要开发先进技术和更可持续的废物管理解决方案。在这项研究中,我们提出了一种高效且可重复的方法,通过毫秒范围内的经济高效的闪蒸焦耳热 (FJH) 将 CFRP 废料升级回收成大量碳纤维复合闪蒸石墨烯 (CFC-FG)。所得的闪光石墨烯通过形态学、结构、光谱和化学分析进行了广泛的表征。这些研究揭示了一种高度多孔的层状结构,具有低浓度的氧官能团和涡轮层状石墨结构。重要的结构特征,包括拉曼光谱中明显的 D' 峰和在选定区域电子衍射 (SAED) 中观察到的椭圆环图案,强调了其独特的特性。CFC-FG 的这些综合特性导致在双电子氧还原反应 (2e− ORR) 中具有优异的电化学性能,用于过氧化氢 (H2O2) 的电合成。CFC-FG 在 0.1 M KOH 中显示出近 100% 的选择性和良好的活性,稳定性测试证实了性能的保留,使其成为实际电合成应用的有希望的候选者。这项工作的核心概念是开发一种用于 H2O2 电合成的可回收、可持续的电催化剂,有助于循环经济并支持全球可持续发展目标。
更新日期:2025-01-30
中文翻译:
来自碳纤维复合材料的闪蒸石墨烯:一种用于生产过氧化氢的可持续高性能电催化剂
碳纤维增强聚合物 (CFRP) 复合材料具有卓越的强度重量比、出色的耐用性和高刚度,因此在各个行业中都是不可或缺的。然而,CFRP 的有效回收仍然是一项重大挑战,需要开发先进技术和更可持续的废物管理解决方案。在这项研究中,我们提出了一种高效且可重复的方法,通过毫秒范围内的经济高效的闪蒸焦耳热 (FJH) 将 CFRP 废料升级回收成大量碳纤维复合闪蒸石墨烯 (CFC-FG)。所得的闪光石墨烯通过形态学、结构、光谱和化学分析进行了广泛的表征。这些研究揭示了一种高度多孔的层状结构,具有低浓度的氧官能团和涡轮层状石墨结构。重要的结构特征,包括拉曼光谱中明显的 D' 峰和在选定区域电子衍射 (SAED) 中观察到的椭圆环图案,强调了其独特的特性。CFC-FG 的这些综合特性导致在双电子氧还原反应 (2e− ORR) 中具有优异的电化学性能,用于过氧化氢 (H2O2) 的电合成。CFC-FG 在 0.1 M KOH 中显示出近 100% 的选择性和良好的活性,稳定性测试证实了性能的保留,使其成为实际电合成应用的有希望的候选者。这项工作的核心概念是开发一种用于 H2O2 电合成的可回收、可持续的电催化剂,有助于循环经济并支持全球可持续发展目标。