A novel self-supported structure of Ce-UiO-66/TNF in a redox electrolyte with high supercapacitive performance

Ce-UiO-66 was firstly used as a supercapacitor electrode material and exhibited a high capacitance of 6.9 Fcm−2 in a redox electrolyte. [Display omitted] A novel self-supported structure of Ce-UiO-66/TNF was firstly synthesized by growing Ce-UiO-66 on a TNF substrate. This novel Ce-UiO-66/TNF materi...

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Bibliographic Details
Published in:Journal of colloid and interface science 2020-08, Vol.573, p.55-61
Main Authors: Yang, Jie, Chen, Leishan, Li, Weiwei, Chen, Gairong, Wang, Lizhen, Zhao, Shuai
Format: Article
Language:English
Subjects:
Ce-UiO-66
Electrochemical performance
Fe(CN)63−/4
Self-supported
Supercapacitor
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Summary:Ce-UiO-66 was firstly used as a supercapacitor electrode material and exhibited a high capacitance of 6.9 Fcm−2 in a redox electrolyte. [Display omitted] A novel self-supported structure of Ce-UiO-66/TNF was firstly synthesized by growing Ce-UiO-66 on a TNF substrate. This novel Ce-UiO-66/TNF material was proved to possess a high supercapacitive performance in the redox electrolyte of Fe(CN)63−/4−, and it was also the first study for Ce-UiO-66 material on the supercapacitor application. High specific capacitances of 6.9 and 2.5 Fcm−2 can be achieved at large current densities of 20 and 80 mAcm−2, respectively. After 10,000 charge-discharge cycles, the capacitance retention can be kept at 95% and the coulomb efficiency can be maintained over 98%. Such outstanding electrochemical performance may be related to the redox property of the electrolyte, high specific surface area of the Ce-UiO-66 material, porous characteristic of the TNF substrate and self-supported structure of the whole electrode.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2020.03.115