Process of manufacturing a porous carbon material and a capacito

Details Process of manufacturing a porous carbon material and a capacito Process of manufacturing a porous carbon material and a capacito

1996-11-08

1999-03-02

Beck, Shrive

Coating processes

Electrical product produced

Condenser or capacitor

427122, 4271261, 427215, 427219, 4273977, B05D 512, B05D 700

Patent

active

058767878

ABSTRACT:
A process of manufacturing a porous carbon material and a capacitor having the same is provided. The process is comprised of: forming an intermediate blank (in the shape of a desired electrode) made of a metal carbide material having a porosity in the range of substantially 30% to 50% by volume. The blank is then impregnated by exposure to a gaseous hydrocarbon mixture at a temperature exceeding the decomposition of the hydrocarbon until the mass of the blank increases by about 10% to 25%. Next the inner surface of the blank is activated by heating. The blank is then exposed to gaseous chlorine and heated to remove the metal and form the blank having transport channels. Further chlorination occurs which forms nano sized pores in the structure. Thus, a porous carbon material is made which contains transport channels and nano sized pores.

REFERENCES:
patent: 3619286 (1971-11-01), Gutnajer
patent: 4100314 (1978-07-01), Wallouch
patent: 5147590 (1992-09-01), Preidel et al.
patent: 5218757 (1993-06-01), Kaneko et al.
patent: 5392433 (1995-02-01), Kawakubo et al.
patent: 5402306 (1995-03-01), Mayer et al.
patent: 5702839 (1997-12-01), Frost et al.

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