Thursday, May 26, 2011

US Patent 7948739 - Graphite flake supercapacitor

This patent from Nanotek Instruments includes some basic claims to graphite-based supercapacitors. Claim 1 reads:

1. A composite composition for use in an electrode for electrochemical capacitors, said composition comprising:

a) an electrochemically active material; and

b) exfoliated graphite flakes that are substantially interconnected to form a porous, conductive graphite network comprising pores, wherein at least a portion of said active material resides in a pore of said network and wherein said graphite network has a specific surface area greater than about 200 m2/gm.