Method for making carbon films

Details Method for making carbon films Method for making carbon films

1998-04-30

1999-07-20

King, Roy V.

Coating processes

Heat decomposition of applied coating or base material

Coating decomposed to form carbide or coating carbonized

427122, 427 79, B05D 302

Patent

active

059254084

ABSTRACT:
A method for treating an organic polymer material, preferably a vinylidene chloride/vinyl chloride copolymer (Saran) to produce a flat sheet of carbon film material having a high surface area (.apprxeq.1000 m.sup.2 /g) suitable as an electrode material for super capacitor applications. The method comprises heating a vinylidene chloride/vinyl chloride copolymer film disposed between two spaced apart graphite or ceramic plates to a first temperature of about 160.degree. C. for about 14 hours to form a stabilized vinylidene chloride/vinyl chloride polymer film, thereafter heating the stabilized film to a second temperature of about 750.degree. C. in an inert atmosphere for about one hour to form a carbon film; and finally activating the carbon film to increase the surface area by heating the carbon film in an oxidizing atmosphere to a temperature of at least 750-850.degree. C. for between 1-6 hours.

REFERENCES:
patent: 5443859 (1995-08-01), Nagata
patent: 5487917 (1996-01-01), Gadkaree

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