초록 ▼

A method for fabricating thin, flat carbon electrodes by infiltrating highly porous carbon papers, membranes, felts, metal fibers/powders, or fabrics with an appropriate carbon foam precursor material. The infiltrated carbon paper, for example, is then cured to form a gel-saturated carbon paper, whi

A method for fabricating thin, flat carbon electrodes by infiltrating highly porous carbon papers, membranes, felts, metal fibers/powders, or fabrics with an appropriate carbon foam precursor material. The infiltrated carbon paper, for example, is then cured to form a gel-saturated carbon paper, which is subsequently dried and pyrolyzed to form a thin sheet of porous carbon. The material readily stays flat and flexible during curing and pyrolyzing to form thin sheets. Precursor materials include polyacrylonitrile (PAN), polymethylacrylonitrile (PMAN), resorcinol/formaldehyde, catechol/formaldehyde, phenol/formaldehyde, etc., or mixtures thereof. These thin films are ideal for use as high power and energy electrodes in batteries, capacitors, and fuel cells, and are potentially useful for capacitive deionization, filtration and catalysis.

대표청구항 ▼

[ We claim:] [1.] A method or making carbon foam having a thickness of 1 to 40 mils, comprising the steps of:forming a carbon foam precursor material composed of a precursor solution formed from a precursor, a solvent and water;uniformly infiltrating a porous material substrate having a density of l

[ We claim:] [1.] A method or making carbon foam having a thickness of 1 to 40 mils, comprising the steps of:forming a carbon foam precursor material composed of a precursor solution formed from a precursor, a solvent and water;uniformly infiltrating a porous material substrate having a density of less than 0.2 g/cc with the carbon foam precursor material until the porous material is saturated;curing the thus saturated porous and precursor materials; andpyrolyzing the thus cured materials.