Metal Organic framework derived carbon for ultrahigh power and long cyclic life aqueous Zn ion capacitor

In order to develop functional energy storage device, it is necessary to improve the energy and power density. As a potential candidate that can synergistically harmonize energy and power density, lithium ion capacitor (LIC) has shown exciting promises in recent years. However, in the recent years, alternative metal has been explored to replace lithium in such metal-ion capacitor system. Hence, in this work we present zinc ion capacitor (ZIC) in which zinc acts as negative electrode and Metal Organic framework (MOF) derived carbon as positive electrode. The assembled ZIC was able to demonstrate exceptional power density of 85.5 kW kg-1 and a maximal energy density of 36.4 W h kg-1, together with 99 % capacitance retention after cycling for 20 000 cycles.