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Issue 2, 2016
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Hierarchical Ni–Co layered double hydroxide nanosheets entrapped on conductive textile fibers: a cost-effective and flexible electrode for high-performance pseudocapacitors

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Abstract

Hierarchical three-dimensional (3D) porous nanonetworks of nickel–cobalt layered double hydroxide (Ni–Co LDH) nanosheets (NSs) are grown and decorated on flexible conductive textile substrate (CTs) via a simple two-electrode system based electrochemical deposition (ED) method. By applying a proper external cathodic voltage of −1.2 V for 15 min, the Ni–Co LDH NSs are densely deposited over the entire surface of the CTs with good adhesion. The flexible Ni–Co LDH NSs on CTs (Ni–Co LDH NSs/CTs) architecture with high porosity facilitates enhanced electrochemical performance in 1 M KOH electrolyte solution. The effect of growth concentration and external cathodic voltage on the electrochemical properties of Ni–Co LDH NSs/CTs is also investigated. The Ni10Co5 LDH NSs/CTs electrode exhibits a high specific capacitance of 2105 F g−1 at a current density of 2 A g−1 as well as an excellent cyclic stability as a pseudocapacitive electrode due to the advantageous properties of 3D interconnected porous frameworks of Ni10Co5 LDH NSs/CTs. This facile fabrication of bimetallic hydroxide nanostructures on CTs can provide a promising electrode for low-cost energy storage device applications.

Graphical abstract: Hierarchical Ni–Co layered double hydroxide nanosheets entrapped on conductive textile fibers: a cost-effective and flexible electrode for high-performance pseudocapacitors

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Publication details

The article was received on 19 Aug 2015, accepted on 30 Aug 2015 and first published on 09 Oct 2015


Article type: Paper
DOI: 10.1039/C5NR05643H
Nanoscale, 2016,8, 812-825

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    Hierarchical Ni–Co layered double hydroxide nanosheets entrapped on conductive textile fibers: a cost-effective and flexible electrode for high-performance pseudocapacitors

    G. Nagaraju, G. S. R. Raju, Y. H. Ko and J. S. Yu, Nanoscale, 2016, 8, 812
    DOI: 10.1039/C5NR05643H

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