| 摘要 |
An energy storage device such as an electric double layer capacitor has positive and negative electrodes, each including a blend of respective first and second activated carbon materials having distinct pore size distributions. The blend (mixture) of first and second activated carbon materials may be equal in each electrode. The ultramicropores can comprise 0.2 cm3 /g or more (e.g., 0.2, 0.25, 0.3, 0.35 or 0.4 cm3 /g or more) of the total pore volume. Pores having a pore size (d) in the range of l< d<2 nm can comprise 0.05 cm3 /g or more (e.g., at least 0.1, 0.15, 0.2 or 0.25 cm3 /g) of the total pore volume. If present, any pores having a pore size greater than 2 nm, which may include mesopores and/or macropores, can comprise 0.15 cm3 /g or less (e.g., less than 0.1 or 0.05 cm3 /g) of the total pore volume. |
