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Title: Hierarchical grass like NiCo2O4 Nanoflakes on 3-dimensional microporous electrically conductive network with superior electrochemical performance
Authors: Li, M 
Wang, Y
Wu, D
Wang, L
Yang, H 
Issue Date: 2017
Source: Energy procedia, 2017, v. 105, no. , p. 4848-4853
Abstract: Bimetallic oxide nickel cobaltite (NiCo2O4) nanoflakes are fabricated on the surface and sidewall of three dimensional microporous electrically conductive network (MECN) as the active electrode materials for miniature supercapacitors by hydrothermal method. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) characterisation of as-prepared material demonstrates that the nanostructure grown on the MECN consists of a NiCo2O4 nanoflake layer. Compared with the nanostructured nickel growth on the MECN, the as-prepared NiCo2O4/MECN nanoflake has shown enhanced electrochemical properties, manifesting a high capacitance of 607.29 F g-1 (7.29 F cm-2) at 10 mA cm-2 and good cycling stability of 60.60% capacity retention after 2000 cycles. Even at the power density of 1000.0 W Kg-1, the device still has the energy density of 134.71 Wh Kg-1 which is comparable to related research. The large specific capacitance and remarkable rate capability can attribute to the unique 3D ordered porous architecture, which facilitates electron and ion transport, enlarges the liquid-solid interfacial area, and enhances the utilization efficiency of the active materials. Meanwhile, the weight and size of the device are reduced.
Keywords: 3D structure
Energy storage
Microporous electrically conductive network
Nickel cobaltite
Supercapacitors
Publisher: Elsevier
Journal: Energy procedia 
ISSN: 1876-6102
EISSN: 1876-6102
DOI: 10.1016/j.egypro.2017.03.960
Description: 8th International Conference on Applied Energy, ICAE 2016, Beijing, China, 8-11 October 2016
Rights: © 2017 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
The following publication Li, M., Wang, Y., Wu, D., Wang, L., & Yang, H. (2017). Hierarchical grass like NiCo2O4 Nanoflakes on 3-dimensional microporous electrically conductive network with superior electrochemical performance. Energy Procedia, 105, 4848-4853 is available athttps://dx.doi.org/10.1016/j.egypro.2017.03.960
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