| AVS 61st International Symposium & Exhibition | |
| Energy Frontiers Focus Topic | Tuesday Sessions |
| Session EN-TuP |
| Session: | Energy Frontiers Poster Session |
| Presenter: | Claus Rebholz, University of Cyprus |
| Authors: | C.G. Rebholz, University of Cyprus N. Kostoglou, University of Cyprus V. Tzitzios, National Center for Scientific Research Demokritos C. Tampaxis, National Center for Scientific Research Demokritos G. Charalambopoulou, National Center for Scientific Research Demokritos T. Steriotis, National Center for Scientific Research Demokritos K. Giannakopoulos, National Center for Scientific Research Demokritos Y. Li, Khalifa University of Science, Technology & Research K. Liao, Khalifa University of Science, Technology & Research K. Polychronopoulou, Khalifa University of Science, Technology & Research |
| Correspondent: | Click to Email |
In the present work, we synthesized and systematically characterized two novel graphene-based nanomaterials, a reduced graphene oxide sponge and a microwave-exfoliated graphene oxide. Their textural properties were determined by N2 adsorption/desorption at 77 K, while additional characterization techniques were employed in order to elucidate further their structure, surface chemistry and morphology such as X-Ray Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FT-IR), Field-Emission Scanning Electron Microscopy (FE-SEM) and High-Resolution Transmission Electron Microscopy (HR-TEM). Both nanomaterials were additionally evaluated for their H2 storage performance and were critically compared to commercially available carbons (e.g. graphene nanoplatelets, carbon nanotubes) based on systematic H2 adsorption/desorption measurements at 77K between 0-1 bar. Maximum H2 gravimetric capacities ~0.5 wt% and ~0.7 wt% were recorded at 77 K and 1 bar for the reduced GO sponge and the microwave-exfoliated GO, respectively. A linear relationship was found between the H2 uptake values and the BET specific surface area of the materials included in this study.