| abstract |
The present invention provides a carbonaceous material used in an electric double layer capacitor having a high capacitance and capable of maintaining a high capacitance and energy density over a long period of time, and a method for producing the same. With the goal. A carbonaceous material having a specific surface area by BET method of 1,200 m 2 / g to 1,800 m 2 / g, an R value by Raman spectrum of 1.2 or more, and a G band half width of 70 cm −1 or more. material. [Selection figure] None |