Carbonaceous material and method for producing same, electrode active material for electrochemical devices, electrode for electrochemical devices, and electrochemical device

A carbonaceous material, having

• a BET specific surface area in a range of from 1,500 to 1,900 m2/g,
• an average pore size in a range of from 1.84 to 2.05 nm at a nitrogen relative pressure P/P0 of 0.93 in a nitrogen adsorption isotherm measured at a temperature of 77.4 K,
• a ratio of a volume of pores having a pore size of 3 nm or smaller, determined by the BJH method, in a range of from 65 to 90% with respect to a 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 a volume of pores having a pore size in a range of from 1 to 2 nm, which volume is determined by the MP method, in a range of from 10 to 20% with respect to the total pore volume calculated based on the nitrogen adsorption amount at a relative pressure P/P0 of 0.93 in the nitrogen adsorption isotherm.