A combustion method to synthesize nanoporous graphene

• Published in: RSC advances 2018-01, Vol.8 (17), p.932-9326
• Main Authors: Yang, Q. Y, Zhou, H. L, Xie, M. T, Ma, P. P, Zhu, Z. S, Zhu, W, Wang, G. Z
• Format: Article
• Language: English
• Subjects: Aerogels; Capacitance; Chemistry; Graphene; Porosity; Synthesis
• ISSN: 2046-2069; 2046-2069
• DOI: 10.1039/c7ra13568h

In this paper, we introduce a combustion method which is rapid, low cost, mass-producing and environmentally friendly to produce nanoporous graphene. After loading a graphene oxide aerogel (GOA)/paper (GOP) on a preheated hot plate (as the heat source, with a temperature as low as 200 °C) under an ambient environment, in a few seconds, the GOA/GOP would self-combust and change into reduced graphene oxide (RGO) with nanopores mainly concentrated in the 0.4-2.0 nm range and a large specific surface area of 536 m 2 g −1 . Supercapacitors fabricated with the synthesized porous RGO (P-RGO) showed a high specific capacitance of 245 F g −1 at 0.1 A g −1 , and a retention rate of about 96.9% after 12 000 cycle tests with respect to the initial specific capacitance with a scan rate of 10.0 A g −1 . The production yield of this method was as high as 77.0%. The combustion process of GOA, and the specific surface area and pore size distribution of P-RGO are shown in the images.