Porous carbon has been widely used as electrode material in supercapacitors because of its many advantages. However, its capacitive performance and energy density still remains lower than desired due to the imperfect microstructure of electrode materials. In this regard, single Al-based metal-organic framework (Al-MOF) crystals were selectively sintered together at high temperature, resulting in the formation of an interconnect nanoporous carbon structure (NPC-950), which exhibits high specific surface area with a co-existence of micro- and mesopores as well as high electronic conductivity. Because of the unique structure, the NPC-950 sample exhibited excellent capacitance performances in both aqueous and organic electrolyte solution. In sharp contrast, the nanoporous carbon derived from Al-MOF single crystals without the interconnect structure shows much lower capacitive performance compared with NPC-950. It is revealed that the interconnect-structure mainly contributes to the enhanced capacitive performance by fast mass transportation and electron transport within the porous carbon network. Furthermore, three organic electrolyte solutions were used to investigate the influence of ionic liquid, pore structure and the solvent on the capacitive performance. It is found that NPC-950 can achieve the highest capacitance in BMIMBF₄ electrolyte due to the suitable ion size as well as proper solvent.

多孔碳由于具有许多优点而被广泛用作超级电容器的电极材料。然而，由于电极材料的不完美的微观结构，其电容性能和能量密度仍然低于期望值。在这方面，在高温下选择性地将单个Al基金属有机骨架（Al-MOF）晶体烧结在一起，从而形成互连纳米多孔碳结构（NPC-950），它具有高的比表面积，微孔和中孔的共存以及高电子电导率。由于其独特的结构，NPC-950样品在水性和有机电解质溶液中均表现出出色的电容性能。与之形成鲜明对比的是，没有互连结构的Al-MOF单晶衍生的纳米多孔碳与NPC-950相比，具有更低的电容性能。揭示了互连结构主要通过多孔碳网络内的快速质量传输和电子传输来有助于增强电容性能。此外，使用三种有机电解质溶液来研究离子液体，孔结构和溶剂对电容性能的影响。发现由于合适的离子尺寸和合适的溶剂，NPC-950可以在BMIMBF ₄电解质中获得最高的电容。