Copper based metal-organic coordination polymer for high-performance supercapacitors

[Display omitted] •Facile synthesis of copper based metal–organic coordination polymer (MOCP).•Cu-MOCP delivers specific capacitance of 217.3 F g−1 at 0.4 mA cm−2.•High stability as 95.5% capacity retains for 2000 cycles at 6.7 mA cm−2 for Cu-MOCP.•Improved capacitance of Cu-MOCP occurs by their microflower structure. Copper (Cu)-dipicolonic acid (DPA) based metal-organic coordination polymers (MOCPs) has been evaluated as an electrode material for supercapacitors. Cu-MOCP exhibits specific capacitance of 217.3 F g−1 at 0.4 mA cm−2 and superior capacitance retention of 95.5% after 2000 cycles at 6.7 mA cm−2 in 1.0 M NaOH electrolyte using galvanostatic study. It may arouse from the micro structure in Cu-MOCP that gives enough void for storage and diffusion of electrolyte, suggesting its promising electrode material for supercapacitors.