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Hydrogen Storage Capacity Improvement of Nanostructured Materials

Published online by Cambridge University Press:  17 March 2011

Jeremy Lawrence  and
Gu Xu
Jeremy Lawrence
Affiliation:
Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S 4L7, Canada
Gu Xu
Affiliation:
Department of Materials Science and Engineering, McMaster University, Hamilton, ON L8S 4L7, Canada
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Abstract

Safe, lightweight, and cost-effective materials are required to practically store hydrogen for use in portable fuel cell applications. Compressed hydrogen and on-board hydrocarbon reforming present certain advantages, but their limitations must ultimately render them insufficient. Storage in hydrides and adsorption systems show promise in models and experimentation, but a practical medium remains unavailable. To study hydrogen storage properties a new volumetric testing apparatus was designed and constructed. Adsorption conditions are evaluated up to pressures exceeding 250 bar and a broad range of temperatures. RF sputtering was used to introduce metals to carbon nanotubes with the aim to enhance hydrogen storage. Here we show a significant improvement in the gravimetric storage density over that of as-prepared single-wall nanotube samples that may be due to the unique interface introduced.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 704: Symposium W – Nanoparticulate Materials , 2001 , W8.5.1
Copyright
Copyright © Materials Research Society 2002

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