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Synthesis and Hydrogen Storage Capacity of Exfoliated Turbostratic Carbon Nanofibers by Hung-Chih Wu; Yuan-Yao Li; Akiyoshi Sakoda is a Engineering article available to read on EtoBox.

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Turbostratic carbon nanofibers (CNFs) with a rough surface, open pore walls, and a defect structure were continuously produced by the thermal decomposition of alcohol in the presence of an iron catalyst and a sulfur promoter at 1100 C under a nitrogen atmosphere in a vertical chemical vapor deposition reactor. A graphite exfoliation technique using intercalation and thermal shock was employed to expand the graphene layers of the asproduced turbostratic CNFs. The hydrogen storage capacity of the turbostratic CNF samples was measured using the volumetric method with a pressure of up to 1 MPa at 77 K. The hydrogen storage capacities of the as-produced and exfoliated turbostratic CNFs were 1.5 and 5 wt%, respectively. The defects on the surface and expandable graphitic structure are considered important keys to increasing the hydrogen uptake in turbostratic CNFs.

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Author

Hung-Chih Wu; Yuan-Yao Li; Akiyoshi Sakoda

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0360-3199)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)