Open AccessExperimental study on the hydrogen storage and release in nano-graphite synthesized by explosive detonation
Author(s) -
Cuié Wen,
Zhihao Jin,
Xun Li,
Dalin Sun,
Guan Jin-Qing,
Xiaoxin Liu,
Lin Ying-Rui,
Shiying Tang,
Gang Zhang,
Jianguo Lin
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.2384
Subject(s) - explosive material , detonation , materials science , hydrogen storage , graphite , nano , hydrogen , chemical engineering , composite material , chemistry , organic chemistry , alloy , engineering
In this article, synthesis of nanographite powders using pure TNT ( trinitrotoluene )explosives is reported. X-ray Diffraction (XRD) results indicated that the detonation product has a hexagonal-graphite structure and the average size of the particles of graphite is 1.86—2.61nm. Specific surface area of nano-graphite is about 500—650m2/g measured by BET gas sorption instrument.Crystal grain size of the nano-graphite calculated is 4.41—6.85nm by its specific surface area. A hydrogen storage and release capacity of 0.33—0.37 weight at room temperature under a modestly high pressure (12MPa) for untreated nano-graphte samples synthesized under different conditions. Under the same condition, the capacity of hydrogen storage and release of untreated carbon nanofibers、multi walled carbon nanotubes and superactive carbon is 0.15wt%—0.35wt0.15wt%—0.20wt0.92wt%—0.98wtrespectively.The specific surface area of carbon nanostructured materials is the most important factor in its hydrogen storage and release.