Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors
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Date
Authors
Momodu, Damilola Y.
Bello, Abdulhakeem
Dangbegnon, Julien K.
Barzegar, Farshad
Taghizadeh, Fatemeh
Fabiane, Mopeli
Johnson, Alan T. Charlie
Manyala, Ncholu I.
Journal Title
Journal ISSN
Volume Title
Publisher
American Institute of Physics
Abstract
In this paper, we demonstrate excellent pseudo-capacitance behavior of nickelaluminum
double hydroxide microspheres (NiAl DHM) synthesized by a facile
solvothermal technique using tertbutanol as a structure-directing agent on nickel
foam-graphene (NF-G) current collector as compared to use of nickel foam current
collector alone. The structure and surface morphology were studied by X-ray
diffraction analysis, Raman spectroscopy and scanning and transmission electron
microscopies respectively. NF-G current collector was fabricated by chemical vapor
deposition followed by an ex situ coatingmethod of NiAlDHMactivematerial which
forms a composite electrode. The pseudocapacitive performance of the composite
electrode was investigated by cyclic voltammetry, constant charge–discharge and
electrochemical impedance spectroscopy measurements. The composite electrode
with the NF-G current collector exhibits an enhanced electrochemical performance
due to the presence of the conductive graphene layer on the nickel foam and gives a
specific capacitance of 1252 F g−1 at a current density of 1 A g−1 and a capacitive
retention of about 97% after 1000 charge–discharge cycles. This shows that these
composites are promising electrode materials for energy storage devices.
Description
Keywords
Nickelaluminum double hydroxide microspheres (NiAl DHM), Nickel foam-graphene (NF-G), Solvothermal synthesis, Pseudo-capacitors
Sustainable Development Goals
Citation
Momodu, D, Bello, A, Dangbegnon, J, Barzeger, F, Taghizadeh, F, Fabiane, M, Johnson, ATC & Manyala, N 2014, 'Solvothermal synthesis of NiAl double hydroxide microspheres on a nickel foam-graphene as an electrode material for pseudo-capacitors', AIP Advances, vol. 4, no. 9, pp. 097122-1-097122-14.