title: Hydrogen storage capacity of catalytically grown carbon nanofibers.
abstract: In 1996, R. T. K. Baker, and N. M. Rodriguez claimed to have synthesized a new type of carbon nanofiber material capable of storing large amounts of hydrogen at room temperature and pressures above 100 bar, thus making it a powerful candidate for a very efficient energy storage system in mobile applications. Consequently, many scientists all over the world tried to test and verify these findings, however, with partly inconsistent results. We present here for the first time independent hydrogen storage measurements for several types of nanofibers, both synthesized by our group following precisely the specifications given in the literature as well as original samples supplied by Rodriguez and Baker for this study. The hydrogen storage capacities at room temperature and pressures up to 140 bar were quantified independently by gravimetric and volumetric methods, respectively. No significant hydrogen storage capacity has been detected for all carbon nanofibers investigated.
authors.affiliation: Bavarian Center for Applied Energy Research (ZAE Bayern e.V.), Div. 1, 85748 Garching, Germany. Rzepka@muc.zae-bayern.de
authors.forename: Matthias
authors.initials: M
authors.lastname: Rzepka
authors.forename: Erich
authors.initials: E
authors.lastname: Bauer
authors.forename: Gudrun
authors.initials: G
authors.lastname: Reichenauer
authors.forename: Thomas
authors.initials: T
authors.lastname: Schliermann
authors.forename: Babette
authors.initials: B
authors.lastname: Bernhardt
authors.forename: Klaus
authors.initials: K
authors.lastname: Bohmhammel
authors.forename: Eva
authors.initials: E
authors.lastname: Henneberg
authors.forename: Uta
authors.initials: U
authors.lastname: Knoll
authors.forename: Heinz-Eberhard
authors.initials: HE
authors.lastname: Maneck
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Braue