期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 33, 期 6, 页码 1706-1710出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2008.01.011
关键词
hydrogen storage; modified spill-over effects; activated carbon fibers; electroplating
In this work, copper nanoparticles were plated onto the surfaces of activated carbon fibers (ACFs) in order to investigate the effects of their presence on the high pressure hydrogen-storage behaviors of the resultant Cu/ACFs, as studied by PCT apparatus at 100 atm and 298 K. The Cu/ACFs' pore structures and total pore volumes were analyzed by reference to N-2/77 K adsorption isotherms, and their chemical composition and surface morphologies were characterized using an energy-dispersive X-ray spectrometer (EDS) and a scanning electron microscope (SEM), respectively. In the experimental result, the specific surface area and total pore volume decreased with increasing electroplating time. However, the hydrogen-storage capacity was enhanced in the presence of Cu nanoparticles for Cu-10 and Cu-30 samples, and then began to decline. These results indicated that the surface properties were decreased by the Cu nanoparticles, but that the hydrogen-storage capacity was increased by the modified spill over of hydrogen molecules into the carbon structures. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
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