US Patent 7943238 - Capacitor with CNT electrode material

http://www.freepatentsonline.com/7943238.html

This patent from Yazaki Corporation teaches a way to use treated carbon nanotubes to form electrodes of supercapacitors. Claim 1 reads:

1. A capacitor comprising two capacitor electrodes separated by an insulating material, wherein at least one of the two capacitor electrodes comprises a carbon nanotube filled with one or more non-carbon materials selected from the group consisting of bromine, iodine, an interhalogen compound, and any combination thereof.