Journal of Colloid and Interface Science, Vol.573, 55-61, 2020
A novel self-supported structure of Ce-UiO-66/TNF in a redox electrolyte with high supercapacitive performance
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. (C) 2020 Elsevier Inc. All rights reserved.