Abstract: A carbonaceous material for electric double-layer capacitors that is based on a plant-derived carbon precursor, in which carbonaceous material: a BET specific surface area is 1,900 to 2,500 m2/g; an average pore size is 2.2 to 2.6 nm as determined by a nitrogen adsorption method; a volume of micropores having a pore size of 2 nm or smaller is 0.84 to 1.30 cm3/g as determined by the MP method; a ratio of a volume of micropores having a pore size of 1 to 2 nm with respect to the volume of the micropores having a pore size of 2 nm or smaller is 25 to 50% as determined by the MP method; and a volume of mesopores having a pore size of 2 to 50 nm is 0.16 to 0.4 cm3/g as determined by the BJH method; and a method of producing same.

Abstract: A carbonaceous material may have a high capacitance per volume as well as a high durability, and/or may have a BET specific surface area is 1,500 to 1,900 m2/g, an average pore size is 1.84 to 2.05 nm at a nitrogen relative pressure P/P0 of 0.93 in a nitrogen adsorption isotherm measured at 77.4 K, a ratio of pore volume having a pore size of 3 nm or smaller, determined by the BJH method, is 65 to 90% relative to total pore volume calculated based on a nitrogen adsorption amount at a relative pressure P/P0 of 0.93 in the nitrogen adsorption isotherm, and a ratio of pore volume having a pore size of 1 to 2 nm, determined by the MP method, is 10 to 20% relative to total pore volume calculated based on the nitrogen adsorption amount at a relative pressure P/P0 of 0.93 in the nitrogen adsorption isotherm.

Abstract: The present invention relates to an additive for an electrochemical element positive electrode comprising an activated carbon, wherein the activated carbon has a specific surface area in accordance with BET method of 1300-2500 m2/g, a pore volume of pores having a diameter of 2 nm or more of 0.35 cm3/g or less, a pore volume of pores having a diameter less than 2 nm of 0.5 cm3/g or more, and an ash content of 0.5% by weight or less.

Abstract: An object of the present invention is to provide a carbonaceous material from which an electrochemical device having a high initial electrostatic capacitance, an excellent effect of suppressing gas generation during charging and discharging, and excellent durability can be obtained, and a method for producing the carbonaceous material, an electrode active material for an electrochemical device containing the carbonaceous material, an electrode for an electrochemical device containing the electrode active material, and an electrochemical device. The present invention relates to a carbonaceous material having a BET specific surface area of 1550 to 2500 m2/g, a value of an oxygen content/hydrogen content per specific surface area of 1.00 to 2.10 mg/m2, and an electrical conductivity of 10 to 15 S/cm determined by powder resistance measurement at a load of 12 kN.

Abstract: The present invention relates to a carbonaceous material having a BET specific surface area of 1550 to 2500 m2/g and a value of an oxygen content/hydrogen content per specific surface area of 1.00 to 2.04 mg/m2.

Abstract: A carbonaceous material may have a high capacitance per volume as well as a high durability, and/or may have a BET specific surface area is 1,500 to 1,900 m2/g, an average pore size is 1.84 to 2.05 nm at a nitrogen relative pressure P/P0 of 0.93 in a nitrogen adsorption isotherm measured at 77.4 K, a ratio of pore volume having a pore size of 3 nm or smaller, determined by the BJH method, is 65 to 90% relative to total pore volume calculated based on a nitrogen adsorption amount at a relative pressure P/P0 of 0.93 in the nitrogen adsorption isotherm, and a ratio of pore volume having a pore size of 1 to 2 nm, determined by the MP method, is 10 to 20% relative to total pore volume calculated based on the nitrogen adsorption amount at a relative pressure P/P0 of 0.93 in the nitrogen adsorption isotherm.

Abstract: A carbonaceous material for electric double-layer capacitors that is based on a plant-derived carbon precursor, in which carbonaceous material: a BET specific surface area is 1,900 to 2,500 m2/g; an average pore size is 2.2 to 2.6 nm as determined by a nitrogen adsorption method; a volume of micropores having a pore size of 2 nm or smaller is 0.84 to 1.30 cm3/g as determined by the MP method; a ratio of a volume of micropores having a pore size of 1 to 2 nm with respect to the volume of the micropores having a pore size of 2 nm or smaller is 25 to 50% as determined by the MP method; and a volume of mesopores having a pore size of 2 to 50 nm is 0.16 to 0.4 cm3/g as determined by the BJH method; and a method of producing same.

Abstract: A carbonaceous material for electric double-layer capacitors that is based on a plant-derived carbon precursor, in which carbonaceous material: a BET specific surface area is 1,900 to 2,500 m2/g; an average pore size is 2.2 to 2.6 nm as determined by a nitrogen adsorption method; a volume of micropores having a pore size of 2 nm or smaller is 0.84 to 1.30 cm3/g as determined by the MP method; a ratio of a volume of micropores having a pore size of 1 to 2 nm with respect to the volume of the micropores having a pore size of 2 nm or smaller is 25 to 50% as determined by the MP method; and a volume of mesopores having a pore size of 2 to 50 nm is 0.16 to 0.4 cm3/g as determined by the BJH method.

Abstract: A carbonaceous material for electric double-layer capacitors that is based on a plant-derived carbon precursor, in which carbonaceous material: a BET specific surface area is 1,900 to 2,500 m2/g; an average pore size is 2.2 to 2.6 nm as determined by a nitrogen adsorption method; a volume of micropores having a pore size of 2 nm or smaller is 0.84 to 1.30 cm3/g as determined by the MP method; a ratio of a volume of micropores having a pore size of 1 to 2 nm with respect to the volume of the micropores having a pore size of 2 nm or smaller is 25 to 50% as determined by the MP method; and a volume of mesopores having a pore size of 2 to 50 nm is 0.16 to 0.4 cm3/g as determined by the BJH method.

Abstract: A porous carbon material for electrodes of energy storage devices comprising: a porous carbon material; 0.5 to 5 parts by mass of an insulating material having a boiling point of 150° C. or more based on 100 parts by mass of the porous carbon material; and 0.25 to 15 parts by mass of a conductive additive based on 100 parts by mass of the insulating material, wherein the insulating material and the conductive additive are carried on the porous carbon material in combination, and the porous carbon material has a BET specific surface area of 1300 to 2050 m2/g.

Abstract: A porous carbon material for electrodes of energy storage devices comprising: a porous carbon material; 0.5 to 5 parts by mass of an insulating material having a boiling point of 150° C. or more based on 100 parts by mass of the porous carbon material; and 0.25 to 15 parts by mass of a conductive additive based on 100 parts by mass of the insulating material, wherein the insulating material and the conductive additive are carried on the porous carbon material in combination, and the porous carbon material has a BET specific surface area of 1300 to 2050 m2/g.