Thermoelectric Study of Hydrogen Storage in Carbon Nanotubes
Keyword(s):
AbstractIn situ resistivity and thermoelectric power (S) have been used to study the nature of the adsorption of hydrogen in bundles of single-walled carbon nanotubes for H2 pressure P <1 atm and temperatures 77 K<T<500 K. Isothermal plots of S vs. Δρ/ρ0 are found to exhibit linear behavior as a function of gas coverage, consistent with a physisorption process. Studies of S, ρ at T = 500 K as a function of pressure exhibit a plateau at a pressure P~40 Torr, the same pressure where the H % measurements suggest the highest binding energy sites are being saturated. The effects of H2 exposure at 500 K on the thermoelectric transport properties are fully reversible.
2015 ◽
Vol 118
◽
pp. 72-77
◽
2002 ◽
Vol 01
(03n04)
◽
pp. 197-204
◽
2008 ◽
Vol 112
(36)
◽
pp. 14179-14187
◽
2015 ◽
Vol 120
(29)
◽
pp. 15632-15639
◽