Hybrid α-Fe2O3@NiO heterostructures for flexible and high performance supercapacitor electrodes and visible light driven photocatalysts

Hybrid α-Fe2O3@NiO heterostructures are successfully anchored on a carbon cloth by a facile hydrothermal approach. α-Fe2O3 nanorods are used as the conducting scaffolds to support NiO nanosheets. The as-prepared heterostructures are characterized by series of techniques and directly functionalized a...

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Bibliographic Details
Published in:Nano energy 2014-11, Vol.10, p.90-98
Main Authors: Jiao, Yang, Liu, Yang, Yin, Bosi, Zhang, Siwen, Qu, Fengyu, Wu, Xiang
Format: Article
Language:English
Subjects:
Applied sciences
Capacitors. Resistors. Filters
Chemistry
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Energy
Energy accumulation
Energy. Thermal use of fuels
Exact sciences and technology
General and physical chemistry
Heterostructures
Hydrothermal growth
Photocatalyst
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Supercapacitor electrode
Transport and storage of energy
Various equipment and components
α-Fe2O3@NiO
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Summary:Hybrid α-Fe2O3@NiO heterostructures are successfully anchored on a carbon cloth by a facile hydrothermal approach. α-Fe2O3 nanorods are used as the conducting scaffolds to support NiO nanosheets. The as-prepared heterostructures are characterized by series of techniques and directly functionalized as the supercapacitors (SCs) without using any ancillary materials such as carbon black or the binders. The SCs demonstrate high areal capacitance of 557mF/cm2 and excellent cyclic performance with nearly 96.2% capacity retention after 3000 cycles at a current density of 1mA/cm2. The excellent electrochemical performance can be attributed to a rational combination of two electrochemical active materials. Besides, the hybrid heterostructure can be used as a high performance recyclable photocatalyst under visible light irradiation, which can photodegrade Congo red (CR) with the degradation rate of 98% after 30min, it demonstrates potential applications in wastewater treatment and energy storage devices. [Display omitted] •Hybrid α-Fe2O3@NiO heterostructures are successfully anchored on a carbon cloth by a facile hydrothermal approach.•The as-prepared heterostructures are directly functionalized as the supercapacitors (SCs).•The SCs demonstrate high areal capacitance and excellent cyclic performance after 3000 cycles.•The hybrid heterostructure can be used as a high performance recyclable photocatalyst under visible light irradiation.
ISSN:2211-2855
DOI:10.1016/j.nanoen.2014.09.002