Few-layer graphene-like flakes derived by plasma treatment: A potential material for hydrogen adsorption and storage

Nikolaos Kostoglou, Afshin Tarat, Ian Walters, Vladislav Ryzhkov, Christos Tampaxis, Georgia Charalambopoulou, Theodore Steriotis, Christian Mitterer, Claus Rebholz

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A novel, one-step, wet-free, environmental friendly and high-yield method for producing few-layer graphene powders with large surface areas (up to 800 m2/g) and narrow nanopore sizes (0.7-0.8 nm) using plasma-induced exfoliation of natural graphite is presented. Advanced characterization techniques were employed, including scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction and N2 gas adsorption/desorption measurements at 77 K, to investigate the morphological, elemental, structural and textural/porosity properties of these nanomaterials. Fully reversible H2 gas adsorption/desorption isotherms with maximum gravimetric capacities of up to ∼2 wt.% at 77 K and ∼60 bar are reported here. The H2 storage performance at 77 K is well correlated with certain textural features such as specific surface area and microporosity. The results of this work provide a valuable feedback for further research on plasma-processed graphene-based materials towards efficient H2 storage via cryo-adsorption.

Original languageEnglish
Pages (from-to)482-487
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume225
DOIs
Publication statusPublished - 1 May 2016
Externally publishedYes

    Fingerprint

Keywords

  • Adsorption
  • Graphene
  • Hydrogen storage
  • Nanoporous powders
  • Plasma

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Cite this