Abstract
Hydrogen storage in carbon nanotubes (CNTs) is investigated at ambient temperature and pressures of 0–12 MPa, using 35–85 g multi-wall carbon nanotube (MWNT) samples that were synthesized in a nano-agglomerate fluidized bed reactor. The volume of hydrogen gas released by the CNTs was measured by a volumetric flow meter. The capability of H2 storage in the CNT samples of mass of up to 85 g can be obtained with a precision of 0.01 wt. %. MWNTs with average diameters ranging from 10–30 nm and were pretreated using nitric acid or a sodium hydroxide solution wash and a high temperature treatment. The influence of the hydrogen pressure, hydrogen storage time and treatment method were studied. All data show that the amount of hydrogen released by the MWNTs at room temperature is no more than 0.30 wt. %, while hydrogen released by MWNT at 77 K can reach 2.27 wt. %.
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Ning, G., Wei, F., Luo, G. et al. Hydrogen storage in multi-wall carbon nanotubes using samples up to 85 g. Appl. Phys. A 78, 955–959 (2004). https://doi.org/10.1007/s00339-003-2414-z
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DOI: https://doi.org/10.1007/s00339-003-2414-z