The aim of this paper is to explore a facile, rapid and scalable method for the exfoliation and reduction of graphene oxide (GO). In this work, the GO was reduced within 30 min using Red Al as a reductant in a high-gravity rotating packed bed (RPB) reactor. As a result of the process intensification by high gravity technology, the reduced graphene oxide obtained by RPB (RPB-RGO) has a better exfoliation degree and higher C/O (8.00) than that obtained in stirred tank reactor (STR). The RPB-RGO can be dispersed in organic solvent especially in ACN, THF, EtOH and IPA, and remained stable for a week. Furthermore, using the RPB-RGO as electrode material in a supercapacitor cell, specific capacitance value as high as 78 F/g has been demonstrated as compared to 69 F/g of STR-RGO. This work puts forward a novel method for fast and scalable production of graphene for supercapacitor application.

本文的目的是探索一种简便，快速且可扩展的剥落和还原氧化石墨烯（GO）的方法。在这项工作中，在高重力旋转填充床（RPB）反应器中使用Red Al作为还原剂在30分钟内还原了GO。通过高重力技术强化工艺的结果是，与搅拌釜反应器（STR）相比，RPB（RPB-RGO）获得的还原石墨烯具有更好的剥离度和更高的C / O（8.00）。RPB-RGO可以分散在有机溶剂中，尤其是分散在ACN，THF，EtOH和IPA中，并保持稳定一周。此外，将RPB-RGO用作超级电容器电池中的电极材料，与STR-RGO的69 F / g相比，已证明特定电容值高达78 F / g。