Process for producing nano-scaled graphene platelet...

Details Process for producing nano-scaled graphene platelet... Process for producing nano-scaled graphene platelet...

2011-01-25

2011-01-25

Theisen, Mary Lynn F (Department: 1743)

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

C264S028000, C264S109000

Reexamination Certificate

active

07875219

ABSTRACT:
A process for producing meso-porous nanocomposite electrode comprising nano-scaled graphene platelets. The process comprises: (A) providing nano-scaled graphene platelets, wherein each of the platelets comprises a single graphene sheet or a stack of multiple graphene sheets, and the platelets have an average thickness no greater than 100 nm (preferably less than 5 nm and most preferably less than 2 nm in thickness); (B) combining a binder material, the graphene platelets, and a liquid to form a dispersion; (C) forming the dispersion into a desired shape and removing the liquid to produce a binder-platelet mixture; and (D) treating the binder material under a desired temperature or radiation environment to convert the binder-platelet mixture into a meso-porous nanocomposite electrode, wherein the platelets are bonded by the binder and the electrode has electrolyte-accessible pores characterized in that the nanocomposite has a surface area greater than about 100 m2/gm (preferably greater than 200 m2/gm, more preferably greater than 500 100 m2/gm, and most preferably greater than 1,000 m2/gm). A supercapacitor featuring such a nanocomposite exhibits an exceptionally high capacitance value.

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