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

Abstract Metal-organic frameworks are formed via the connection of transition metals with oxygen- or nitrogen-containing organic ligands; the organic ligands are rich in carbon and contain heteroatoms such as N and P. Herein, NMFC-T porous carbon was prepared with (Ni 3 (BTC) 2 (Me 2 NH) 3 ) as the carbon precursor using the strategy of pre-carbonization and KOH activation. Influence of carbonization temperature on properties of NMFC-T porous carbon was investigated, and the electrochemical performance of NMFC-800 porous carbon was studied using a three-electrode system. Results revealed that NMFC-800 porous carbon has a high specific surface area of 1143 m 2 g -1 with a mesopore proportion over 80%. Using KOH solution as an electrolyte, the specific capacitance was as high as 211 F g −1 at a current density of 1 A g −1 , and the capacitance retention was 81.04% after 5000 cycles. NMFC-800 porous carbon has excellent supercapacitive performance and good cycle stability.