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Issue 13, 2016
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Hierarchical NiO–In2O3 microflower (3D)/ nanorod (1D) hetero-architecture as a supercapattery electrode with excellent cyclic stability

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Abstract

Three-dimensional (3D) hybrid nanostructured electrodes based on one-dimensional (1D) nanorod arrays have recently attracted great attention owing to their synergistic effect of three-dimensional nanostructures and application in energy storage and conversion devices. Here, we designed a heterostructured supercapattery electrode from a combination of NiO and In2O3 with a hierarchical hybrid microstructure on nickel foam (NF). Simultaneous heterogeneous growth of 1D nanorod-supported 3D microflower structures on nickel foam enhanced the non-capacitive faradaic energy storage performance due to the synergistic contribution from hierarchical hybrid nanostructure. The heterostructured electrode exhibits a high specific capacity of 766.65 C g−1 at 5 A g−1 and remains as high as 285.12 C g−1 at 30 A g−1. The composite electrode shows an excellent rate performance as a sandwich type symmetric device, offering a high specific energy of 26.24 W h kg−1 at a high power of 1752.8 W kg−1. The device shows a long term cyclic stability with 79% retention after 50 000 cycles, which is remarkable for an oxide based pseudocapacitor. These results suggest that NiO–In2O3 with hybrid micro/nano architecture could be a promising electrode for next generation supercapatteries.

Graphical abstract: Hierarchical NiO–In2O3 microflower (3D)/ nanorod (1D) hetero-architecture as a supercapattery electrode with excellent cyclic stability

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Publication details

The article was received on 18 Dec 2015, accepted on 29 Feb 2016 and first published on 02 Mar 2016


Article type: Paper
DOI: 10.1039/C5TA10407F
Citation: J. Mater. Chem. A, 2016,4, 4820-4830
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    Hierarchical NiO–In2O3 microflower (3D)/ nanorod (1D) hetero-architecture as a supercapattery electrode with excellent cyclic stability

    N. Padmanathan, H. Shao, D. McNulty, C. O'Dwyer and Kafil. M. Razeeb, J. Mater. Chem. A, 2016, 4, 4820
    DOI: 10.1039/C5TA10407F

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