Method for making carbon films

Patent · Thu Dec 31 23:00:00 EST 1998

OSTI ID:872395

Tan, Ming X ^[1]

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1. Livermore, CA

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.

• Research Organization: SANDIA CORP
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Livermore, CA)
• Patent Number(s): US 5925408
• OSTI ID: 872395
• Country of Publication: United States
• Language: English

Related Subjects

/427/
1-6
1000
14
160
750
750-850
activating
apart
applications
apprxeq
atmosphere
capacitor
capacitor applications
carbon
carbon film
carbon films
ceramic
ceramic plate
chloride
comprises
comprises heating
copolymer
degree
disposed
electrode
electrode material
film
film disposed
film material
films
finally
flat
form
graphite
heating
hour
hours
increase
inert
inert atmosphere
material
method
method comprise
method comprises
organic
organic polymer
oxidizing
oxidizing atmosphere
plates
polymer
polymer film
polymer material
preferably
produce
saran
sheet
spaced
spaced apart
stabilized
suitable
super
super capacitor
surface
temperature
thereafter
thereafter heating
treating
vinyl
vinyl chloride
vinylidene
vinylidene chloride