In this work, a honeycomb-like carbon material derived from petroleum pitch was synthesized by a simple one-step carbonization/activation method using silica nanospheres as the hard templates. The obtained hierarchical porous carbon materials (HPCs) with a large specific surface area and uniform macropore distribution provide abundant active sites and sufficient ion migration channels. When used as an electrode material for supercapacitors, the HPCs exhibit a high specific capacitance of 341.0 F g^-1 at 1 A g^-1, excellent rate capability with a capacitance retention of 55.6 % at 50 A g^-1 (189.5 F g^-1), and outstanding cycling performance in the three-electrode system.

在这项工作中，使用二氧化硅纳米球作为硬模板，通过简单的一步碳化/活化方法合成了源自石油沥青的蜂窝状碳材料。所获得的具有大的比表面积和均匀的大孔分布的分级多孔碳材料（HPC）提供了丰富的活性位点和足够的离子迁移通道。当作为电极材料超级电容器中使用的，高性能计算机表现出341.0 F G高的比电容^-1 1 A G ^-1，优异的倍率性能，在50甲克的55.6％的电容保持^-1（189.5 F G ^{- 1}），并且在三电极系统中具有出色的循环性能。