Preparation of metal-organic framework-derived porous carbon and study of its supercapacitive performance

In this work, Ni3(BTC)2(Me2NH)3 was synthesized via a hydrothermal method and used as a carbon precursor. Porous carbon with hierarchical structure was then obtained from pre-carbonization of the precursor at a certain temperature and then mixing of the pre-carbonization product and KOH in a certain ratio. The porous-carbon materials showed a high BET specific surface area (1143 m2 g−1)，an average pore size (5.246 nm) , and nitrogen content (2.79 at%). Favorable specific capacitances of 211 F g−1 in 6 M KOH solution were achieved. These properties may enrich and broaden the use of porous carbons as electrodes, especially considering their high conversion rate, high surface area, and good electrochemical performance.347