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Title: Cellulose nanofibril/reduced graphene oxide/carbon nanotube hybrid aerogels for highly flexible and all-solid-state supercapacitors

Source: ACS Applied Materials & Interfaces 2015, 7

Author(s)Zheng, Qifeng; Cai, Zhiyong; Ma, Zhenqiang; Gong, Shaoqin

Publication Year: 2015  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4706-1B

Abstract: A novel type of highly flexible and all-solid-state supercapacitor that uses cellulose nanofibril (CNF)/reduced graphene oxide (RGO)/carbon nanotube (CNT) hybrid aerogels as electrodes and H2SO4 poly (vinyl alcohol) PVA gel as the electrolyte was developed and is reported here. These flexible solid-state supercapacitors were fabricated without any binders, current collectors, or electroactive additives. Because of the porous structure of the CNF/RGO/CNT aerogel electrodes and the excellent electrolyte absorption properties of the CNFs present in the aerogel electrodes, the resulting flexible supercapacitors exhibited a high specific capacitance (i.e., 252 F g-1 at a discharge current density of 0.5 A g-1) and a remarkable cycle stability (i.e., more than 99.5% of the capacitance was retained after 1000 charge-discharge cycles at a current density of 1 A g-1). Furthermore, the supercapacitors also showed extremely high areal capacitance, areal power density, and energy density (i.e., 216 mF cm-2, 9.5 mW cm-2, and 28.4 µWh cm-2, respectively). In light of its excellent electrical performance, low cost, ease of large-scale manufacturing, and environmental friendliness, the CNF/RGO/CNT aerogel electrodes may have a promising application in the development of flexible-energy storage devices.

Keywords: aerogels, cellulose nanofibrils, graphene, carbon nanotube, all-solid-state supercapacitors

Publication Review Process: Formally Refereed

File size: 8,192 kb(s)

Date posted: 11/22/2016

This publication is also viewable on Treesearch:  view
RITS Product ID: 83692
Current FPL Scientist associated with this product
Cai, Zhiyong
Supervisory Research Materials Engineer
  

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