Nanoengineered carbon scaffolds for hydrogen storage.
Single-walled carbon nanotube (SWCNT) fibers were engineered to become a scaffold for the storage of hydrogen. Carbon nanotube fibers were swollen in oleum (fuming sulfuric acid), and organic spacer groups were covalently linked between the nanotubes using diazonium functionalization chemistry to provide 3-dimensional (3-D) frameworks for the adsorption of hydrogen molecules. These 3-D nanoengineered fibers physisorb twice as much hydrogen per unit surface area as do typical macroporous carbon materials. These fiber-based systems can have high density, and combined with the outstanding thermal conductivity of carbon nanotubes, this points a way toward solving the volumetric and heat-transfer constraints that limit some other hydrogen-storage supports.
Leonard
Ashley D
AD
Department of Chemistry, Rice University MS 222, 6100 Main Street, Houston, Texas 77005, USA.
Hudson
Jared L
JL
Fan
Hua
H
Booker
Richard
R
Simpson
Lin J
LJ
O'Neill
Kevin J
KJ
Parilla
Philip A
PA
Heben
Michael J
MJ
Pasquali
Matteo
M
Kittrell
Carter
C
Tour
James M
JM