| abstract |
An electric double layer capacitor, a lithium ion secondary battery and a lithium ion capacitor having high capacitance and excellent cycle characteristics, and electrode materials capable of obtaining them and composites used for the electrode materials Provided. A composite of a conductive polymer having a nitrogen atom and a porous carbon material, The conductive polymer is bonded to the surface of the porous carbon material; The total pore volume of all the pores having a diameter of 0.5 to 100.0 nm measured by Horvath-Kawazoe method and BJH method is 0.3 to 3.0 cm 3 / g, The ratio of the pore volume of pores having a diameter of 2.0 nm or more and less than 20.0 nm measured by the BJH method is 10 to 30% with respect to the total pore volume, The composite_body | complex whose ratio of the pore volume of the pore which has the diameter of 0.5 nm or more and less than 2.0 nm measured by Horvath-Kawazoe method and BJH method is 70 to 90% with respect to the said total pore volume. [Selection figure] None |