Are carbon nanostructures an efficient hydrogen storage medium?

M. Hirscher, M. Becher, M. Haluska, F. Zeppelin, von, Xiahong Chen, U. Dettlaff-Weglikowska, S. Roth

Research output: Contribution to journalArticleAcademicpeer-review

139 Citations (Scopus)

Abstract

Literature data on the storage capacities of hydrogen in carbon nanostructures show a scatter over several orders of magnitude which cannot be solely explained by the limited quantity or purity of these novel nanoscale materials. With this in mind, this article revisits important experiments. Thermal desorption spectroscopy as a quantitative tool to measure the hydrogen storage capacity needs an appropriate calibration using a suitable hydride. Single-walled carbon nanotubes that have been treated by ultra-sonication show hydrogen uptake at room temperature. However, this storage can be assigned to metal particles incorporated during the sonication treatment. Reactive high-energy ball milling of graphite leads to a high hydrogen loading, however the temperatures for hydrogen release are far too high for application. In view of today’s knowledge, which is mainly based on experiments with small quantities and poorly characterised samples, carbon nanostructures at around room temperature cannot store the amount of hydrogen required for automotive applications.
Original languageEnglish
Pages (from-to)433-437
JournalJournal of Alloys and Compounds
Volume356-657
DOIs
Publication statusPublished - 2003

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