Aluminum hydride coated single-walled carbon nanotube as a hydrogen storage medium

K. Iyakutti, Y. Kawazoe, M. Rajarajeswari, V. J. Surya

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)

Abstract

We report a first principle study on the hydrogen storage in Aluminum hydride (AlH3) coated (5, 5) single-walled carbon nanotube (SWCNT). Our study indicates that a SWCNT coated with Aluminum hydride (Alane - AlH3) can bind up to four hydrogen molecules. At half coverage of AlH3, the hydrogen storage capacity of the SWCNT is 8.3 wt%. The system with full coverage is also studied and it is found that, even though the hydrogen storage capacity increases, the binding of H2 is weak. All the H2 adsorption is molecular with H-H bond length of 0.756 Å. Our result on a full molecular adsorption of hydrogen via light metal hydride is new and it leads to a practically viable storage process.

Original languageEnglish
Pages (from-to)370-375
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number1
DOIs
Publication statusPublished - 2009 Jan 1

Keywords

  • Aluminum hydride
  • Binding energy
  • Carbon nanotube (CNT)
  • Hydrogen storage material (HSM)

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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