| 초록 |
An easy template-free approach to fabricate pure carbon microspheres has been achieved via direct pyrolysis of as-prepared polyaromatic hydrocarbons, including polyanthracene and polyphenanthrene. These polyaromatic hydrocarbons were developed by adopting anthracene and phenanthrene as raw materials, anhydrous zinc chloride as Friedel-Crafts catalyst, and bromomethyl methyl ether as cross-linker. The results showed that the methylene bridges between phenyl rings generate a hierarchical porous polyaromatic precursor to form three-dimensionally (3D) interconnected micro, meso and macroporous network during carbonization. These hierarchical porous carbon aggregates of spherical carbon exhibit faster ions transport/diffusion behaviour and larger utilization of surface area in electric double layer capacitors. |
