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

Jie Yang; Leishan Chen; Weiwei Li; Gairong Chen; Lizhen Wang; Shuai Zhao

doi:10.1016/j.jcis.2020.03.115

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

J Colloid Interface Sci. 2020 Aug 1:573:55-61. doi: 10.1016/j.jcis.2020.03.115. Epub 2020 Mar 31.

Authors

Jie Yang¹, Leishan Chen², Weiwei Li², Gairong Chen², Lizhen Wang³, Shuai Zhao⁴

Affiliations

¹ Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang, Henan 450003, China. Electronic address: yangjie19881127@126.com.
² Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang, Henan 450003, China.
³ Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan 450002, China. Electronic address: wlz970618@163.com.
⁴ Department of Science, Chongqing University of Technology, Chongqing 400054, China.

PMID: 32276231
DOI: 10.1016/j.jcis.2020.03.115

Abstract

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)₆^3-/^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.

Keywords: Ce-UiO-66; Electrochemical performance; Fe(CN)(6)(3−)/(4−); Self-supported; Supercapacitor.