| 摘要 |
<p>A phosphorus compound-complexed activated carbon capable of easily realizing an electric double layer capacitor having high capacitance per unit volume and excellent durability is provided. A phosphorus compound-complexed activated carbon for an electric double layer capacitor having a phosphorus atom content of 1,000 ppm or more, and 20,000 ppm or less, a BET specific surface area of 1,600 m 2 /g or more, and 2,200 m 2 /g or less, an average pore diameter of 1.7 nm or more, and 2.1 nm or less, and a pore volume of pores having pore diameters within the range of 1.4 nm to 2.0 nm calculated by a Cranston-Inkley method of 0.25 cm 3 /g or more. This phosphorus compound-complexed activated carbon is produced by kneading an activated carbon and phosphoric acid at 130°C to 170°C, conducting molding, and after executing a first heating process in which heating is conducted at 100°C to 230°C, a second heating process in which heating is conducted at 400°C to 600°C, and a steam treatment process in which heating is conducted in a steam atmosphere at 500°C to 900°C, conducting heat treatment in an inert gas atmosphere at 800°C or higher so as to complex a phosphorus compound.</p> |
