In this study, we developed a facile and template-free strategy for the preparation of activated porous carbon beads (APCBs) from polyacrylonitrile. The chemical activation with KOH was found to enhance the pore properties, such as specific surface area (SSA), pore volume, and pore area. The APCBs exhibited a large SSA of 1147.99 m²/g and a pore area of 131.73 m²/g. The APCB-based electrodes showed a good specific capacitance of 112 F/g at 1 A/g in a 6 M KOH electrolyte, and excellent capacitance retention of 100% at a current density of 5 A/g after 1000 cycles. Therefore, the APCBs prepared in this study can be applied as electrode materials for electric double-layer capacitors.

在这项研究中，我们开发了一种简便且无模板的策略，用于从聚丙烯腈制备活化的多孔碳珠（APCB）。发现用KOH进行化学活化可增强孔的性能，例如比表面积（SSA），孔体积和孔面积。APCB的SSA很大，为1147.99 m ² / g，孔面积为131.73 m ² / g。在6 M KOH电解质中，基于APCB的电极在1 A / g时显示出112 F / g的良好比电容，在1000次循环后在5 A / g的电流密度下具有100％的出色电容保持率。因此，本研究中制备的APCB可用作双电层电容器的电极材料。