Hierarchical nickel-based metal-organic framework/graphene oxide incorporated graphene nanoplatelet electrode with exceptional cycling stability for coin cell and pouch cell supercapacitors

The utilization of the electrode materials for supercapacitor based on metal-organic frameworks (MOFs) has gained much attraction from researchers, due to their remarkable surface area, tunable pore size, and numerous redox sites. construction a hierarchical Ni-MOF/graphene oxide (GO) incorporated graphene nanoplatelet (GNP) exhibited unique synergistic interaction between two different graphitic carbon structures towards weak electrical conductivity stability pristine MOFs. introduction GO GNP MOF not only improves but also enhances interfacial transport kinetics both electrons ions electrodes. Herein, Ni-MOF/GO/GNP fabricated by facile approach is mounted in symmetrical coin cell pouch cell, using 2.0 M potassium acetate as electrolyte, prepare supercapacitors. constructed Ni-MOF/GO3/GNP manifest outstanding electrochemical performance with specific capacitances 102.24 70.41 F/g at current density 1 A/g, respectively. extraordinary capacitance retentions 85.6% 82.5% are achieved cells, respectively, after more than 20,000 cycles. This exceptional outcome ascribed favorable that largely structural hybrid material.