Excellent performance supercapacitors with the compounding of Ni(OH) 2 and ZIF-67 derived Co–C–N nanosheets as flexible electrode materials

. Furthermore, the device also shows outstanding cycling stability with 90.2% capacitance retention after 5000 cycles of charge-discharge. Basically, the remarkable performance can be attributed to the well-developed structure, abundant active sites, complex beneficial components, and their intrinsic properties. Significantly, rational design can broaden the research directions of corresponding electrode materials.