Deposition of Ni(OH)2 on nickel substrate using vacuum kinetic spray and its application to high-performance supercapacitor

Herein, we report a direct deposition of nano-structured Ni(OH) 2 from micro-sized Ni(OH) 2 powder on nickel sheet and nickel foam using nano-particle deposition system, one of the low-vacuum and room temperature vacuum kinetic spray processes. In this work, the deposition of the Ni(OH) 2 powder on...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2019-09, Vol.30 (18), p.17481-17490
Main Authors: Mohammed, Mohaned Mohammed Mahmoud, Chun, Doo-Man
Format: Article
Language:English
Subjects:
Capacitance
Carrier gases
Characterization and Evaluation of Materials
Chemistry and Materials Science
Crystallites
Electrochemical analysis
Electrode materials
Electrodes
Electrons
Emission analysis
Gas pressure
Materials Science
Metal foams
Metal sheets
Nickel
Nickel compounds
Optical and Electronic Materials
Particle deposition
Raman spectroscopy
Substrates
Thin films
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Summary:Herein, we report a direct deposition of nano-structured Ni(OH) 2 from micro-sized Ni(OH) 2 powder on nickel sheet and nickel foam using nano-particle deposition system, one of the low-vacuum and room temperature vacuum kinetic spray processes. In this work, the deposition of the Ni(OH) 2 powder on nickel sheets is carried out with various stand-off-distances (SoDs) and carrier gas pressures. The deposited films are investigated by field-emission electron microscopy, X-ray diffraction, and Raman spectroscopy. The crystallite size of the nano-structured Ni(OH) 2 depends on the SoD and the carrier gas pressure. The electrochemical performance of Ni(OH) 2 deposited on nickel sheets is measured by cyclic voltammetry in the 3-electrode cell. The deposition with 5 mm SoD and 0.3 MPa carrier gas pressure is found to be the optimum deposition condition for the nano-structured Ni(OH) 2 thin film as an electrode material. The nano-structured Ni(OH) 2 thin film deposited with 5 mm SoD and 0.3 MPa carrier gas pressure on nickel foam demonstrates a specific capacitance of 2377 F g −1 at 2 mV s −1 scan rate and 2092 F g −1 at 1 A g −1 current density and excellent cyclic stability for 3000 cycles with 83% capacitance retention.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-019-02098-y