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 language | English (US) |
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Pages (from-to) | 1-5 |
Number of pages | 5 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 65 |
Issue number | 3 |
DOIs | |
State | Published - Jan 1 2002 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics