A nanocontainer for the storage of hydrogen

X. Ye, X. Gu, X. G. Gong, Tony K.M. Shing, Zhi Feng Liu

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Molecule hydrogen is known to have a weak van der Waals potential, which makes it difficult to raise its storage efficiency for physisorption based methods. In this report, we explore the other side of such a weak potential, the well-known compressibility of hydrogen. A (20, 0) single wall carbon nanotube based nanocontainer is designed, in which a C60 "peapod" at the cap section of the nanotube serves as a molecular valve. Diffusion barriers through such a valve is examined by molecular dynamics simulations under various conditions. It is demonstrated that H2 can first be filled into the container upon compression at low temperature, and then be locked inside it after the release of external pressure. The internal pressure that can be achieved in this design is in the GPa range at room temperature, which is much higher than the typical pressure of a few hundred bar currently employed for hydrogen storage. At 2.5 GPa, the storage weight ratio approaches a promising 7.7%.

Original languageEnglish
Pages (from-to)315-320
Number of pages6
JournalCarbon
Volume45
Issue number2
DOIs
Publication statusPublished - 2007 Feb 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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    Ye, X., Gu, X., Gong, X. G., Shing, T. K. M., & Liu, Z. F. (2007). A nanocontainer for the storage of hydrogen. Carbon, 45(2), 315-320. https://doi.org/10.1016/j.carbon.2006.09.026