TY - JOUR
T1 - Nanostructured graphite-hydrogen systems prepared by mechanical milling method
AU - Orimo, Shin Ichi
AU - Matsushima, Tomoyoshi
AU - Fujii, Hironobu
AU - Fukunaga, Toshiharu
AU - Majer, Gũnter
AU - Zũttel, Andreas
AU - Schlapbach, Louis
N1 - Funding Information:
This work was financially supported by the New Energy and Industrial Technology Development Organization (NEDO), Industrial Technology Research Grant Program, by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research for Priority Areas and for COE (13CE2002), by the Deutsche Forschungsgemeinschaft (DFG), and by the Swiss Bundesamt für Energie.
PY - 2002
Y1 - 2002
N2 - Nanostructured graphite was prepared by mechanical milling under a hydrogen atmosphere. Several samples obtained after different milling times were systematically examined to get fundamental information about the structures, hydrogen concentrations, and also hydrogen desorption properties. The hydrogen concentration reaches up to 7.4 mass% (CH0.95) after milling for 80 h, and two desorption peaks of hydrogen molecule (mass-number = 2), starting at about 600 K and 950 K respectively, are observed in thermal desorption mass-spectroscopy in the sample. Below the temperature of the second desorption peak, at which recrystallization related desorption occurs, the nanostructured graphite is expected to retain its specific defective structures mainly with carbon dangling bonds as suitable trapping sites for hydrogen storage.
AB - Nanostructured graphite was prepared by mechanical milling under a hydrogen atmosphere. Several samples obtained after different milling times were systematically examined to get fundamental information about the structures, hydrogen concentrations, and also hydrogen desorption properties. The hydrogen concentration reaches up to 7.4 mass% (CH0.95) after milling for 80 h, and two desorption peaks of hydrogen molecule (mass-number = 2), starting at about 600 K and 950 K respectively, are observed in thermal desorption mass-spectroscopy in the sample. Below the temperature of the second desorption peak, at which recrystallization related desorption occurs, the nanostructured graphite is expected to retain its specific defective structures mainly with carbon dangling bonds as suitable trapping sites for hydrogen storage.
KW - Defective structures
KW - Hydrogen storage
KW - Mechanical milling
KW - Nanostructured graphite
KW - Recrystallization
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U2 - 10.1080/10587250290113411
DO - 10.1080/10587250290113411
M3 - Conference article
AN - SCOPUS:4544238321
SN - 1058-725X
VL - 386
SP - 173
EP - 178
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
IS - PART 1
T2 - Proceedings of the First International Symposium on Nanocarbons
Y2 - 14 November 2001 through 16 November 2001
ER -