Abstract:
The present invention provides methods of preparing functionalized graphene nanoribbons. Such methods include: (1) exposing a plurality of carbon nanotubes (CNTs) to an alkali metal source in the presence of an aprotic solvent to open them; and (2) exposing the opened CNTs to an electrophile to form functionalized graphene nanoribbons (GNRs). The methods may also include a step of exposing the opened CNTs to a protic solvent to quench any reactive species on them. Additional methods include preparing unfunctionalized GNRs by: (1) exposing a plurality of CNTs to an alkali metal source in the presence of an aprotic solvent to open them; and (2) exposing the opened CNTs to a protic solvent to form unfunctionalized GNRs.
Abstract:
Provided are a conductive polymer-carbon nanotube composite including a carbon nanotube and a conductive polymer filled therein, and a method of manufacturing the same. The conductive polymer-carbon nanotube composite where a conductive polymer is filled in a carbon nanotube is manufactured by introducing a monomer of the conductive polymer into the carbon nanotube using a supercritical fluid technique and polymerizing the monomer. The conductive polymer-carbon nanotube composite is a novel nano- structure material which can overcome limitations that conventional materials may have, and thus can be applied to various applications such as sensors, electrode materials, nanoelectronic materials, etc.
Abstract:
A method for making sulfur charged carbon nanotubes, the structure of the sulfur charged carbon nanotubes, and a cathode including the sulfur charged carbon nanotubes are described herein. The method comprises dissolving sublimed sulfur in a solvent to create a solution. The method further comprises adding carbon nanotubes to the solution. The method further comprises adding a polar protic solvent to the solution. The method further comprises removing the solvent from the solution.
Abstract:
Provided is a method for the production of a reinforced polymer, which method comprises: (a) introducing carbon nanotubes into a polymer to provide a mixture of the polymer and the nanotubes; (b) stretching the mixture at or above the melting temperature (Tm) of the polymer; and (c) stretching the mixture in the solid state so as to orient the carbon nanotubes.
Abstract:
L'invention concerne l'utilisation de nanoobjets en carbone sous fluoré en tant que matériau d'électrode de batteries primaires au lithium, l'électrode obtenue par cette utilisation ainsi qu'une batterie au lithium comprenant une telle électrode. Les nanoobjets en carbone sous fluoré utilisés dans l'invention ont une partie centrale en carbone non fluoré et une partie périphérique en carbone fluoré de formule CF X où x représente le rapport atomique F/C qui est tel que 0,25 19 F MAS RMN présente un seul pic entre -150 et -190 ppm/CFCl 3 (hors bandes de rotation). L'invention trouve application dans le domaine du stockage et de la restitution d'énergie, en particulier.
Abstract:
Methods for recovery of naturally occurring nanoclusters are provided involving providing an aqueous nanacluster slurry and desorbing the nanoclusters from the surface of host substrate on which the nanoclusters are bound, followed by isolating the desorbed nanoclusters, and the isolated naturally occurring nanoclusters obtained thereby.
Abstract:
According to the invention there is a particle including a plurality of stacked sub- structures, each sub-structure including a stack of graphene layers, in which the separation between successive stacked sub-structures is greater than the separation between successive graphene layers in each sub-structure.
Abstract:
A multi-walled titanium-based nanotube array containing metal or non-metal dopants is formed, in which the dopants are in the form of ions, compounds, clusters and particles located on at least one of a surface, inter-wall space and core of the nanotube. The structure can include multiple dopants, in the form of metal or non- metal ions, compounds, clusters or particles. The dopants can be located on one or more of on the surface of the nanotube, the inter-wall space (interlayer) of the nanotube and the core of the nanotube. The nanotubes may be formed by providing a titanium precursor, converting the titanium precursor into titanium-based layered materials to form titanium-based nanosheets, and transforming the titanium-based nanosheets to multi-walled titanium-based nanotubes.
Abstract:
A method for preparing a functional nano−material utilizing an endothermic reaction, characterized in that in a process of preparing a multilayer carbon nanotube (3) by the chemical vapor−phase deposition method or liquid−phase deposition method, a reaction auxiliary (H 2 S) undergoing an endothermic reaction is added in addition to the main reactants (CH 4 , H 2 ) for the chemical vapor−phase deposition method or liquid−phase deposition method, to thereby form a single−layer carbon nanotube (4). A method essentially the same as the above method can be used for preparing, in addition to a single−layer carbon nanotube, a single−layer boron nitride nanotube, a single−layer silicon carbide nanotube, a multilayer carbon nanotube having a controlled number of layer, a multilayer boron nitride nanotube having a controlled number of layer, a multilayer silicon carbide nanotube having a controlled number of layer, a metal−included fullerene or a metal−included fullerene having a controlled number of layer in good yield.