JP2005286178A5 - - Google Patents

Claims (7)

Needle coke green powder is calcined at 600 to 900 ° C. for 2 to 4 hours under an inert atmosphere, and the calcined powder is mixed with 1.8 to 2.2 times the amount of alkali hydroxide powder in weight ratio to obtain a powder mixture Is calcined at 650 to 850 ° C. for 2 to 4 hours under an inert atmosphere, and the calcined powder mixture is washed to remove alkali hydroxide and dried to obtain a pore volume of 0.1 nm or less in pore diameter of 0.01 nm or less. Obtaining carbon powder that is ˜0.1 ml / g; and shaping the carbon powder;
A carbonaceous electrode for an electric double layer capacitor obtained by a method comprising:   The carbonaceous electrode for an electric double layer capacitor according to claim 1, wherein the needle coke green powder is a coal-based needle coke green powder. The electric double layer capacitor is of a structure in which soaked carbonaceous electrode solutes in the organic photoelectric Kaieki dissolved in an organic solvent, carbonaceous electrode according to claim 1 or 2, wherein the electric double layer capacitor . The solute of the organic electrolyte is a formula

[Wherein, each R is independently an alkyl group having 1 to 10 carbon atoms, or an alkylene group having 3 to 8 carbon atoms linked together, and X ⁻ is a counter anion. ]
The carbonaceous electrode for electric double layer capacitors according to claim 3, which is a pyrrolidinium compound salt represented by the formula: The carbonaceous electrode for an electric double layer capacitor according to claim 4, wherein the pyrrolidinium compound salt is a spirobipyrrolidinium salt. The counter anion of the pyrrolidinium compound salt is a tetrafluoroborate anion, a borate anion partially substituted with a borofluoride alkyl group, a hexafluorophosphate anion, perchloric acid, or iodine. Carbonaceous electrode for electric double layer capacitor. Needle coke green powder is calcined at 600 to 900 ° C. for 2 to 4 hours under an inert atmosphere, and the calcined powder is mixed with 1.8 to 2.2 times the amount of alkali hydroxide powder in weight ratio to obtain a powder mixture Is calcined at 650 to 850 ° C. for 2 to 4 hours under an inert atmosphere, and the calcined powder mixture is washed to remove alkali hydroxide and dried to obtain a pore volume of 0.1 nm or less in pore diameter of 0.01 nm or less. Obtaining carbon powder that is ˜0.1 ml / g; and shaping the carbon powder;
Of producing a carbonaceous electrode for an electric double layer capacitor.