Patent ID: 8797717

Claim:
An electrode comprising a binder and an activated carbon cryogel having a tunable pore structure, wherein the activated carbon cryogel comprises: a surface area of greater than about 1500 m 2 /g as determined by nitrogen sorption at 77 K and BET analysis; a pore structure comprising mesopores having a diameter ranging from about 2.0 nm to about 10.0 nm and a pore volume ranging from about 0.01 cc/g to about 0.25 cc/g for pores having a pore diameter of 0.6 nm to 1.0 nm as determined from N 2 sorption derived DFT; and wherein the specific capacitance of the electrode is at least 100 F/g and the specific power of the electrode is at least 25 W/g when each of the specific capacitance and specific power 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.