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Hydrogen storage materials in large-scale applications of the existence of the problem, namely how to improve the hydrogen storage density of the material, the second is how to make the absorption and desorption of hydrogen mild operating conditions, three is how to reduce the cost of hydrogen storage materials, saving precious metal resources . In this thesis, pre-carbonization and graphitization of anthracite and metallic Mg as the main raw material, was prepared by ball milling Mg-based hydrogen storage materials, using transmission electron microscopy (TEM), powder X-ray diffraction (XRD), differential scanning calorimetry (DSC) by means of the material structure, properties were characterized test results show that the performance of hydrogen storage materials has been greatly improved. Through the different microcrystalline carbon content, milling intensity, the milling time and the different types of carbon materials such factors as differences in the structure and performance of research, the microcrystalline carbon in the preparation of Mg-based hydrogen storage materials grinding, hydrogen storage and catalysis and explores grinding microcrystalline carbon, hydrogen storage and catalytic mechanism. Anthracite pre-carbonization and graphitization, the formation of a large number of porous structure, the rapid increase in the specific surface area; while forming lamellar graphite-like structure, but different from the graphite structure, more orderly two-dimensional, three-dimensionally short orderly, long-range clutter, forming microcrystalline structural unit, so termed microcrystalline carbon (crystallite carbon, referred to as the CC). With the amount of hydrogen self-designed test equipment, TEM, XRD and DSC and other means to carry out the structural characterization of materials and performance testing. The results show that when the content is more than 40wt% CC, the material does not appear bonding Nei Nami of at 2h, but the CC with excessive material will reduce the amount of hydrogen, 70Mg30CC the maximum amount of hydrogen, was 4.35wt%, However, low temperature hydrogen 60Mg40CC while, CC content increased beneficial amorphous material; milled material to changes in intensity of the collision occurred during extrusion deformation, deformation of the deformation work and a change in frequency, the greater the intensity milling , the higher the energy of the material obtained, crystal defects, the more carbon atoms, the greater the probability of occurrence, and thus CC catalytic and hydrogen storage of Mg effect is more obvious; Because CC good dispersion and grinding action, ball 2h, 40Mg60CC Nanometer grade material granularity can, but with the milling time, lead to a more refined grain surface energy increases, the material appears agglomeration, while the lattice structure is destroyed material was intensified milling 4h showed homogeneous amorphous material has been almost phase, and with the increase in milling time, materials, desorption temperature decreases; adding activated carbon, hydrogen storage materials prepared graphite milling performance was not as good as adding CC material, which is made of activated carbon is completely disorderly orderly structure and lamellar graphite structure of the decision. According characterization test results, the CC's grinding, hydrogen storage and catalytic mechanism was discussed, in order to further improve the material and improve its hydrogen storage capacity hydrogen storage and release properties provide theoretical support.
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