Hybrid α-Fe2O3@NiO heterostructures for flexible and high performance supercapacitor electrodes and visible light driven photocatalysts
Hybrid α-Fe2O3@NiO heterostructures for flexible and high performance supercapacitor electrodes and visible light driven photocatalysts
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DOI：
10.1016/j.nanoen.2014.09.002
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发表时间：
2014-11-01
期刊：
影响因子：
17.6
通讯作者：
Wu, Xiang
中科院分区：
文献类型：
--
作者：
Jiao, Yang;Liu, Yang;Wu, Xiang
通过简单的水热方法将混合α-Fe2O3@NiO异质结构成功地锚定在碳布上。α-Fe 2 O3纳米棒被用作支撑NiO纳米片的导电支架。所制备的异质结构的特征在于通过一系列的技术和直接功能化的超级电容器（SC），而不使用任何辅助材料，如炭黑或粘合剂。SC表现出557 mF/cm（2）的高面电容和优异的循环性能，在1 mA/cm（2）的电流密度下3000次循环后，容量保持率接近96.2%。两种电化学活性物质的合理组合可使其具有优异的电化学性能。此外，该杂化异质结构可作为一种高性能的可回收光催化剂，在可见光照射下，可光降解刚果红（CR），30 min后降解率达98%，在废水处理和储能装置中具有潜在的应用前景。(C)2014爱思唯尔有限公司版权所有。
Hybrid alpha-Fe2O3@NiO heterostructures are successfully anchored on a carbon cloth by a facile hydrothermal approach. alpha-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 557 mF/cm(2) and excellent cyclic performance with nearly 96.2% capacity retention after 3000 cycles at a current density of 1 mA/cm(2). 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 30 min, it demonstrates potential applications in wastewater treatment and energy storage devices. (C) 2014 Elsevier Ltd. All rights reserved.