Thermoelectric study of hydrogen storage in carbon nanotubes

G. U. Sumanasekera, Kofi W. Adu, B. K. Pradhan, G. Chen, H. E. Romero, P. C. Eklund

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

In situ resistivity (formula presented) and thermoelectric power (S) have been used to study the nature of the adsorption of hydrogen in bundles of single-walled carbon nanotubes for (formula presented) pressure (formula presented) atm and temperatures (formula presented) Isothermal plots of S vs (formula presented) are found to exhibit linear behavior as a function of gas coverage, consistent with a physisorption process. Studies of S, (formula presented) at (formula presented) as a function of pressure exhibit a plateau at a pressure (formula presented) Torr, the same pressure where the H wt. % measurements suggest the highest binding energy sites are being saturated. The effects of (formula presented) exposure at 500 K on the thermoelectric transport properties are fully reversible.

Original languageEnglish (US)
Pages (from-to)1-5
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number3
DOIs
StatePublished - Jan 1 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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