Superstable porous Co-coordination polymer as the electrode material for supercapacitor

In this paper, a new porous Co-coordination polymer, with the merits of high specific surface areas and high nitrogen content, is synthesized as the electrode material to enhance the electrical performance of supercapacitor . Its electrochemical performance is investigated in the electrolyte of 3 M KOH. The nitrogen doping Co-coordination polymer product at 140 °C exhibits the highest specific capacitance of 512 F g -1 at a current density of 1 A g -1 . Excellent cycle performance is observed. The capacitance value remains 97.4% even after 40000 cycles. More significantly, the Co-coordination polymer exhibits the energy density of 13.27 Wh kg -1 at a power density of 2913 W kg -1 .