This invention relates generally to capacitors comprising organized assemblies of carbon and non-carbon compounds. This invention further relates to methods of making such organized structures. It also relates to devices containing such structures. In preferred embodiments, the organized structures of the instant invention take the form of nanorods or their aggregate forms.

More preferably, a nanorod is made up of a carbon nanotube filled, coated, or both filled and coated by a non-carbon material. In particular, the present invention is directed to a capacitor electrodeA solid electric conductor through which an electric current enters or leaves in a medium comprising a carbon nanotube filled with one or more non-carbon materials comprising titanium, a titanium compound, manganese, a manganese compound, cobalt, nickel, palladium, platinum, bromine, iodine, an interhalogen compound, or the combination thereof.