Balanced kinetics between electrodes by carbon cloth@ZIF-8 for high rate performance zinc-ion hybrid capacitors

Chem Commun (Camb). 2021 Sep 11;57(70):8778-8781. doi: 10.1039/d1cc03004c. Epub 2021 Aug 11.

Abstract

Herein, ZIF-8 pre-grown on carbon cloth (CC) leads to preferential and homogenizing Zn deposition to accelerate Zn-ion diffusion. CC with uniform Zn deposits induced from ZIF-8 promotes rapid Zn plating, resulting in balanced kinetics between electrodes. The as-assembled ZICs show a high specific capacitance of 302 F g-1 at 0.5 A g-1, an outstanding rate performance of 188 F g-1 at 20 A g-1 and 100% capacitance retention after 10000 cycles.