Balanced kinetics between electrodes by carbon cloth@ZIF-8 for high rate performance zinc-ion hybrid capacitors. Issue 70 (11th August 2021)

• Record Type: Journal Article
• Authors: Leng, Changyu; Zhao, Zongbin; Guo, Junjie; Li, Ruilin; Wang, Xuzhen; Xiao, Jian; Fedoseeva, Yuliya V.; Bulusheva, Lyubov G.; Qiu, Jieshan
• Is Part Of: Chemical communications. Volume 57:Issue 70(2021)
• Page Start: 8778
• Page End: 8781
• Publication Date: 2021-08-11
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc03004c
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The Zn anode in zinc-ion hybrid capacitors (ZICs) was modified by means of covering carbon cloth pre-grown with ZIF-8. The kinetics between electrodes are balanced by the rapid Zn-ion diffusion and Zn plating and the ZICs show high rate performance. 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.