Hydrogen content and desorption of carbon nano-structures

• Published in: Journal of alloys and compounds Vol. 366; no. 1; pp. 264 - 268
• Main Authors: Yamanaka, Shinsuke, Fujikane, Masaki, Uno, Masayoshi, Murakami, Hirohiko, Miura, Osamu
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 10-03-2004; Elsevier
• Subjects: Applied sciences; Chemical synthesis; Chemical vapour deposition; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Energy; Energy. Thermal use of fuels; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Hydrogen storage materials; Materials and auxiliary equipments used in energy engineering; Materials science; Nano-structures; Nanoscale materials and structures: fabrication and characterization; Other topics in nanoscale materials and structures; Physics; Solubility, segregation, and mixing; phase separation; Hydrogen storage materials; Chemical vapour deposition; Nano-structures; Chemical synthesis; Scanning electron microscopy; Hydrogen storage; Hydrogen; Carbon nanotubes; Desorption; Nanostructures; Experimental study; Coatings; Carbon; Fibers; CVD
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/S0925-8388(03)00694-7

The hydrogen content and hydrogen desorption characteristics of carbon nanotubes and graphite nanofibres are investigated to examine the potential application of these structures as hydrogen storage media. Carbon nanotubes are prepared by microwave plasma-assisted chemical vapour deposition (CVD), and graphite nanofibres are prepared by thermal chemical vapour deposition. The hydrogen contents of the carbon nanotubes and graphite nanofibres were approximately 8.6 and 0.77
wt.%, respectively. The high hydrogen desorption temperature of the as-prepared carbon nanotubes (peak at 1000
°C) was successfully lowered to 650
°C by sputtering of a 100
nm Pt or Ni coating.