Pseudo-Capacitors: SPPS Deposition and Electrochemical Analysis of α-MoO3 and Mo2N Coatings

Golozar, Mehdi; Chien, Ken; Lian, Keryn; Coyle, Thomas W.

doi:10.1007/s11666-013-9925-8

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…Orthorhombic molybdenum (Mo) trioxide (α-MoO 3 ), is a kind of layered transition metal oxide comprising dual layers of planar crystals of distorted MoO 6 octahedra, held together in the vertical [010] direction, thanks to the van der Waals force. In recent years, MoO 3 nanostructures have attracted high interest for use in many technological and industrial applications, including gas sensors [3][4][5][6], photodetectors [7,8], cathodes or anodes in lithium ion batteries [9][10][11], photochromic and electrochromic devices [12], catalysts [13][14][15], capacitors [16,17], photovoltaic cells [18,19], field emission devices [20,21] and so on. The MoO 3 structures have been obtained by different methods, i.e.…”

Section: Introductionmentioning

confidence: 99%

Characterization of hierarchicalα-MoO₃plates toward resistive heating synthesis: electrochemical activity ofα-MoO₃/Pt modified electrode toward methanol oxidation at neutral pH

et al. 2017

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The growth of MoO hierarchical plates was obtained by direct resistive heating of molybdenum foils at ambient pressure in the absence of any catalysts and templates. Plates synthesized after 60 min resistive heating typically grow in an single-crystalline orthorhombic structure that develop preferentially in the [001] direction, and are characterized by high resolution transmission electron microscopy, selected area diffraction pattern and Raman-scattering measurements. They are about 100-200 nm in thickness and a few tens of micrometers in length. As heating time proceeds to 80 min, plates of α-MoO form a branched structure. A more attentive look shows that primary plates formed at until 60 min could serve as substrates for the subsequent growth of secondary belts. Moreover, a full electrochemical characterization of α-MoO plates on platinum electrodes was done by cyclic voltammetric experiments, at pH 7 in phosphate buffer, to probe the activity of the proposed composite material as anode to methanol electro-oxidation. Reported results indicate that Pt MoO modified electrodes are appropriate to develop new an amperometric non-enzymatic sensor for methanol as well as to make anodes suitable to be used in direct methanol fuel cells working at neutral pH.

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Section: Introductionmentioning

confidence: 99%

Characterization of hierarchicalα-MoO₃plates toward resistive heating synthesis: electrochemical activity ofα-MoO₃/Pt modified electrode toward methanol oxidation at neutral pH

et al. 2017

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“…This change is easy to carry out in SPPS technology. Consequently, it is possible to enlarge the area of thermal spray applications [69]. Another important technological advantage is the possibility of using conventional plasma spray equipment.…”

Section: Solution Precursor Plasma Sprayingmentioning

confidence: 99%

Review of Functionally Graded Thermal Sprayed Coatings

et al. 2020

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The paper briefly describes major thermal spray techniques used to spray functionally graded coatings such as atmospheric plasma spraying, high velocity oxy-fuel spraying, suspension and solution precursor plasma spraying, and finally low and high pressure cold gas spray method. The examples of combined spray processes as well as some examples of post spray treatment including laser and high temperature treatments or mechanical one, are described. Then, the solid and liquid feedstocks used to spray and their properties are shortly discussed. The reviewed properties of functional coatings include: (i) mechanical (adhesion, toughness, hardness); (ii) physical (porosity, thermal conductivity and diffusivity, thermal expansion, photo-catalytic activity), and; (iii) bioactivity and simulated body fluid (SBF) corrosion. These properties are useful in present applications of functionally graded coatings as thermal barriers, the bioactive coatings in prostheses, photo-catalytic coatings in water treatment, coatings used in printing industry (anilox and corona rolls). Finally, some of the future possible fields of functional thermal sprayed coatings applications are discussed, e.g., to coat polymer substrates or to use the cheap technology of low pressure cold gas spray method instead of expensive technology of vacuum plasma spraying to obtain bond coatings.

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Development of photocatalytic and electrocatalytic coatings via thermal spraying for environmental and energy storage applications: a short review

Yu,

Wang,

Gui

et al. 2024

Surf. Sci. Tech.

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With the development of society, human beings are facing environmental problems and an energy crisis worldwide. In this context, photocatalysis and electrocatalysis represent promising technologies to help solving these issues. Up to now, most of the catalysts intended for these usages are prepared via time-consuming wet-chemical approaches, e.g. hydrothermal or sol–gel methods. Moreover, these techniques produce powdery catalysts which need not only a post-filtration step, but also a shaping by a binder for their final applications, which makes the manufacturing cumbersome. Thermal spraying is currently a well-established deposition technique that is capable of elaborating a wide series of functional coatings based on all classes of materials (metals, polymers, ceramics) and featuring tunable compositions as well as micro- and nanostructures. In particular, thermal involving liquid feedstock, and more specifically precursor solutions or suspensions, have allowed generating a wide range of coating thicknesses, from the ten-micron to the submicron/nano scale, increasing thereby the possibilities for enhancing catalytic performances. The present review sets out marking researches relating to the preparation and testing of (i) some photocatalytic coatings intended for the degradation of aqueous organic pollutants and (ii) electrocatalytic coatings investigated as potential energy storage devices. This paper will not only deal with the preparation of catalysts via different thermal spray processes, but also will cover the adjustment of phase compositions and microstructures that are rendered possible when using liquid feedstock thermal spray techniques with the prospect of optimizing the catalytic performances.

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Pseudo-Capacitors: SPPS Deposition and Electrochemical Analysis of α-MoO3 and Mo2N Coatings

Cited by 3 publications

References 33 publications

Characterization of hierarchicalα-MoO₃plates toward resistive heating synthesis: electrochemical activity ofα-MoO₃/Pt modified electrode toward methanol oxidation at neutral pH

Characterization of hierarchicalα-MoO₃plates toward resistive heating synthesis: electrochemical activity ofα-MoO₃/Pt modified electrode toward methanol oxidation at neutral pH

Review of Functionally Graded Thermal Sprayed Coatings

Development of photocatalytic and electrocatalytic coatings via thermal spraying for environmental and energy storage applications: a short review

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Pseudo-Capacitors: SPPS Deposition and Electrochemical Analysis of α-MoO3 and Mo2N Coatings

Cited by 3 publications

References 33 publications

Characterization of hierarchicalα-MoO3plates toward resistive heating synthesis: electrochemical activity ofα-MoO3/Pt modified electrode toward methanol oxidation at neutral pH

Characterization of hierarchicalα-MoO3plates toward resistive heating synthesis: electrochemical activity ofα-MoO3/Pt modified electrode toward methanol oxidation at neutral pH

Review of Functionally Graded Thermal Sprayed Coatings

Development of photocatalytic and electrocatalytic coatings via thermal spraying for environmental and energy storage applications: a short review

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Product

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Characterization of hierarchicalα-MoO₃plates toward resistive heating synthesis: electrochemical activity ofα-MoO₃/Pt modified electrode toward methanol oxidation at neutral pH

Characterization of hierarchicalα-MoO₃plates toward resistive heating synthesis: electrochemical activity ofα-MoO₃/Pt modified electrode toward methanol oxidation at neutral pH