Patent ID: 8467170

Claim:
An electrode comprising a binder and an activated carbon cryogel, the activated carbon cryogel comprising: a surface area ranging from 500 m 2 /g to 1000 m 2 /g as determined by nitrogen sorption at 77 K and BET analysis; a pore structure comprising a pore volume ranging from 0.10 cc/g to 0.42 cc/g for pores having a diameter ranging from 0.6 nm to 1.5 nm as determined from N 2 sorption derived DFT, wherein the specific capacitance of the electrode ranges from 20 F/g to 50 F/g when the specific capacitance is measured in an electric double layer capacitor device comprising an electrolyte comprising equal volumes of propylene carbonate and dimethylcarbonate and further comprising about 1.0 M tetraethylammonium tetrafluoroborate.