High-performance Electrochemical Energy Storage Electrodes Based on Nickel Oxide-coated Nickel Foam Prepared by Sparking Method

Chuminjak, Yaowamarn; Daothong, Suphaporn; Kuntarug, Aekapong; Phokharatkul, Ditsayut; Horprathum, Mati; Wisitsoraat, Anurat; Tuantranont, Adisorn; Jakmunee, Jaroon; Singjai, Pisith

doi:10.1016/j.electacta.2017.03.190

Cited by 36 publications

(14 citation statements)

References 67 publications

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“…The sparking discharge method was conducted as follows. Metal nanoparticles were prepared as previously described [17][18][19][20][21][22][23]. Metal wires, purchased from ADVENT, were placed on tips of interchangeable heads in electric circuit, 2 mm apart from each other and 1 mm away from quartz substrate.…”

Section: Methodsmentioning

confidence: 99%

Inducing Crystallinity of Metal Thin Films with Weak Magnetic Fields without Thermal Annealing

et al. 2018

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Since the discovery of thin films, it has been known that higher crystallinity demands higher temperatures, making the process inadequate for energy-efficient and environmentally friendly methods of thin film fabrication. We resolved this problem by sparking metal wires in a 0.4 Tesla magnetic field at ambient conditions under ultra-pure nitrogen flow to replace the annealing of thin films, and thus designed an environmentally friendly and energy-efficient thin film fabrication method. We employed grazing incidence X-Ray Diffraction spectroscopy to characterize crystallinity of Iron, Nickel, Copper and Tungsten thin films prepared by a sparking discharge process in the presence of 0.4 T magnetic field at an ambient temperature of 25 °C. Control experiment was conducted by sparking without a magnetic field present and using ultra-pure nitrogen flow and ambient air containing oxygen. The Iron thin film prepared in ultra-pure nitrogen flow preserved crystallinity even after one year of ageing. Nickel exhibited higher crystallinity when sparked in nitrogen gas flow than when sparked in atmospheric air and was the only element to crystalize under atmospheric air. Tungsten successfully crystalized after just 40 min of sparking and aluminium failed to crystalize at all, even after 12 h of sparking under nitrogen flow.

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Section: Methodsmentioning

confidence: 99%

Inducing Crystallinity of Metal Thin Films with Weak Magnetic Fields without Thermal Annealing

et al. 2018

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“…Nickel nanoparticles have been utilized in a variety of applications such as catalysts for the reduction process of fuel cells (Faes et al, 2009), energy conversion in solar cells (Karmhag et al, 2000) and hydrogen generation (Chiba et al, 1983;Adkins & Cramer, 1930). Oxidized nickel particles were also investigated extensively as an electrode material based on their porous features (Chuminjak et al, 2017;Cheng et al, 2015). Nickel nanoparticles are easily oxidized due to their large surface area and high reactivity resulting in morphological changes and degrading their performance in various applications.…”

Section: Introductionmentioning

confidence: 99%

Oxidation-induced three-dimensional morphological changes in Ni nanoparticles observed by coherent X-ray diffraction imaging

Ahn

Cho

Kim

et al. 2021

J Synchrotron Radiat

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Three-dimensional structures of Ni nanoparticles undergoing significant morphological changes on oxidation were observed non-destructively using coherent X-ray diffraction imaging. The Ni particles were oxidized into Ni1O1 while forming pores of various sizes internally. For each Ni nanoparticle, one large void was identified at a lower corner near the interface with the substrate. The porosity of the internal region of the agglomerated Ni oxide was about 38.4%. Regions of high NiO density were mostly observed at the outer crust of the oxide or at the boundary with the large voids. This research expands our understanding of general catalytic reactions with direct observation of oxidation-induced nanoscale morphological changes.

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“…Various methods have been used for the deposition of the thin films of metal oxides, including Chemical Vapor Deposition, Pulsed Laser Deposition, Sputtering, Hydrothermal Synthesis, Atomic Layer Deposition, Electrodeposition, Anodization techniques, and Sol‐Gel . More recently, a new deposition approach has been reported, the Spark Method, which is very attractive because it is a low cost and simple physical method, without the need of dangerous chemical precursors that can be easily used for large scale manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Novel Spark Method for Deposition of Metal Oxide Thin Films: Deposition of Hexagonal Tungsten Oxide

Louloudakis

Thongpan

Mouratis

et al. 2019

Physica Status Solidi (a)

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Hexagonal tungsten trioxide (WO 3 ) layers are grown on indium tin oxide (ITO) substrates using a novel spark deposition system. The effects of deposition time, substrate temperature, and oxygen (O 2 ) flow rate through the chamber on the structural and morphological characteristics as well as the electrochemical response of the layers are examined. It is found that a deposition temperature of 400 C and O 2 flow rate at 60 mL min À1 through the chamber can result in hexagonal WO 3 with improved crystallinity and quite effective electrochemical/electrochromic response.

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High-performance Electrochemical Energy Storage Electrodes Based on Nickel Oxide-coated Nickel Foam Prepared by Sparking Method

Cited by 36 publications

References 67 publications

Inducing Crystallinity of Metal Thin Films with Weak Magnetic Fields without Thermal Annealing

Inducing Crystallinity of Metal Thin Films with Weak Magnetic Fields without Thermal Annealing

Oxidation-induced three-dimensional morphological changes in Ni nanoparticles observed by coherent X-ray diffraction imaging

Novel Spark Method for Deposition of Metal Oxide Thin Films: Deposition of Hexagonal Tungsten Oxide

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