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

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 ca...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2021-09, Vol.57 (7), p.8778-8781
Main Authors: Leng, Changyu, Zhao, Zongbin, Guo, Junjie, Li, Ruilin, Wang, Xuzhen, Xiao, Jian, Fedoseeva, Yuliya V, Bulusheva, Lyubov G, Qiu, Jieshan
Format: Article
Language:English
Subjects:
Capacitance
Carbon
Cloth
Ion diffusion
Kinetics
Zinc
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Summary: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. 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.
ISSN:1359-7345
1364-548X
DOI:10.1039/d1cc03004c