Patent ID: 8593787

Claim:
A device comprising: a first electrode in an opposed relationship to a second electrode; a separator positioned between the first electrode and the second electrode; and an electrolyte incorporated throughout the first electrode, the second electrode and the separator, wherein the electrolyte comprises one or more lithium salts and one or more solvents, and the first and second electrodes comprise a majority of activated carbon, the activated carbon having a pore size distribution wherein: pores having a size of ≦1 nm provide a combined pore volume of ≧0.3 cm 3 /g; pores having a size of from >1 nm to ≦2 nm provide a combined pore volume of ≧0.05 cm 3 /g; and any pores having a size of >2 nm provide a combined pore volume of <0.15 cm 3 /g, wherein the device has a maximum operable voltage of greater than 2.7 Volts.