Patent ID: 7091156
Filing Date: 2006-08-15
Classification: C01B,H01G,Y02E,Y02T

Abstract:
1. An activated carbon suitable for use in electric double layer capacitors, said activated carbon being produced by carbonization of a carbonaceous material consisting essentially of coconut shell, wherein said activated carbon is produced by a process comprising: wherein said activated carbon has a BET specific surface area of 2000 m wherein the pore volume of pores having a pore diameter, as calculated according to a Cranston-Inkley method, of 5.0 nm (50 Å) to 30.0 nm (300 Å) is 0.05 cm wherein the amount of oxygen contained per g of said activated carbon is 1.8 mg to 8.1 mg, and wherein said activated carbon exhibits a spontaneous potential versus a lithium electrode of 2.85 V to 3.03 V in a non-aqueous electrolytic solution.