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Graphitic nanofibers, which include tubular fullerenes (commonly called "buckytubes"), nanotubes and fibrils, which are functionalized by chemical substitution, are used as electrodes in electrochemical capacitors. The graphitic nanofiber based electrode increases the performance of the electrochemi

Graphitic nanofibers, which include tubular fullerenes (commonly called "buckytubes"), nanotubes and fibrils, which are functionalized by chemical substitution, are used as electrodes in electrochemical capacitors. The graphitic nanofiber based electrode increases the performance of the electrochemical capacitors. Preferred nanofibers have a surface area greater than about 200 m.sup.2 /gm and are substantially free of micropores.

대표청구항 ▼

[ What is claimed is:] [47.] A capacitor comprising a plurality of cells, each cell comprising:a first electrode, the first electrode comprising nanofibers having a surface area greater than about 100 m.sup.2 /gm;a second electrode, the second electrode comprising nanofibers having a surface area gr

[ What is claimed is:] [47.] A capacitor comprising a plurality of cells, each cell comprising:a first electrode, the first electrode comprising nanofibers having a surface area greater than about 100 m.sup.2 /gm;a second electrode, the second electrode comprising nanofibers having a surface area greater than about 100 m.sup.2 /gm; andan electrode separator disposed between the electrodes, the electrode separator comprising an electrically nonconductive and ionically conductive material; andan electrical connection between the cells.