scholarly journals Effect of oxidative surface treatments on charge storage at titanium nitride surfaces for supercapacitor applications

2017 ◽  
Vol 5 (9) ◽  
pp. 4550-4559 ◽  
Author(s):  
Benjamin M. Gray ◽  
Andrew L. Hector ◽  
Marek Jura ◽  
John R. Owen ◽  
Joshua Whittam
Keyword(s):  
Titanium Nitride ◽  
Electrochemical Oxidation ◽  
Surface Oxidation ◽  
Surface Treatments ◽  
Charge Storage ◽  
Electrode Surfaces ◽  
Supercapacitor Applications

The effects of surface oxidation on the capacitance of titanium nitride electrode surfaces are examined. Electrochemical oxidation was effective in increasing capacitance.

Sulfur and nitrogen-doped graphene quantum dots/PANI nanocomposites for supercapacitors

2021 ◽  
Author(s):  
Hemalatha Kuzhandaivel ◽  
Sornalatha Manickam ◽  
Suresh Kannan Balasingam ◽  
Manik Clinton Franklin ◽  
Hee-Je Kim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Charge Storage ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Supercapacitor Applications ◽  
Storage Properties

Sulfur and nitrogen-doped graphene quantum dots/polyaniline nanocomposites were synthesized and their electrochemical charge storage properties were tested for supercapacitor applications.

The Lead Dioxide Anode. II. The Kinetics and Participation of the Lead Dioxide Electrode in Electrochemical Oxidation Reactions in Sulfuric Acid

1989 ◽  
Vol 42 (9) ◽  
pp. 1527 ◽  
Author(s):  
TH Randle ◽  
AT Kuhn
Keyword(s):  
Sulfuric Acid ◽  
Electrochemical Oxidation ◽  
Maximum Rate ◽  
Lead Dioxide ◽  
Chemical Oxidation ◽  
Oxidation Reactions ◽  
Electrochemical Regeneration ◽  
Electrode Surfaces ◽  
Lead Dioxide Electrode ◽  
Lead Dioxide Anode

Lead dioxide is a strong oxidizer in sulfuric acid, consequently electrochemical oxidation of solution species at a lead dioxide anode may occur by a two-step, C-E process (chemical oxidation of solution species by PbO2 followed by electrochemical regeneration of the reduced lead dioxide surface). The maximum rate of each step has been determined in sulfuric acid for specified lead dioxide surfaces and compared with the rates observed for the electrochemical oxidation of cerium(III) and manganese(II) on the same electrode surfaces. While the rate of electrochemical oxidation of a partially reduced PbO2 surface may be sufficient to support the observed rates of CeIII and MnII oxidation at the lead dioxide anode, the rate of chemical reaction between PbO2 and the reducing species is not. Hence it is concluded that the lead dioxide electrode functions as a simple, 'inert' electron-transfer agent during the electrochemical oxidation of CellI and MnII in sulfuric acid. In general, it will most probably be the rate of the chemical step which determines the feasibility or otherwise of the C-E mechanism.

Mechanisms of Pseudocapacitive Charge Storage in 2D Titanium Nitride Mxenes

2021 ◽  
Vol MA2021-02 (4) ◽  
pp. 450-450
Author(s):  
Sadia Siddika Dima ◽  
Abdoulaye Djire
Keyword(s):  
Titanium Nitride ◽  
Charge Storage

Electrofabrication of large volume di- and tripeptide hydrogels via hydroquinone oxidation

Soft Matter ◽  
2022 ◽  
Author(s):  
Courtenay Patterson ◽  
Bart Dietrich ◽  
Claire Wilson ◽  
Andrew R Mount ◽  
Dave Adams
Keyword(s):  
Electrochemical Oxidation ◽  
Large Volume ◽  
Electrode Surfaces ◽  
Solution Interface

The fabrication of protected peptide-based hydrogels on electrode surfaces can be achieved by employing the electrochemical oxidation of hydroquinone to benzoquinone, liberating protons at the electrode-solution interface. The localised reduction...

Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions

Carbon ◽  
2018 ◽  
Vol 138 ◽  
pp. 369-378 ◽  
Author(s):  
Milica Vujković ◽  
Danica Bajuk-Bogdanović ◽  
Ljiljana Matović ◽  
Marija Stojmenović ◽  
Slavko Mentus
Keyword(s):  
Electrochemical Oxidation ◽  
Alkaline Solutions ◽  
Charge Storage ◽  
Acidic Solutions ◽  
Storage Properties ◽  
Templated Carbon

Analysis of the oxide occurrence on WEDM surfaces in relation to subsequent surface treatments

2019 ◽  
Vol 234 (3) ◽  
pp. 721-733 ◽  
Author(s):  
K Mouralova ◽  
T Prokes ◽  
L Benes
Keyword(s):  
Electrical Discharge Machining ◽  
Surface Oxidation ◽  
Nickel Superalloy ◽  
Surface Treatments ◽  
Hadfield Steel ◽  
Inconel 625 ◽  
High Tendency ◽  
Surface Protection ◽  
Visual Appearance ◽  
Metallic Aluminium

Surface treatments are typical surface protection against corrosion or serve to create an attractive appearance for the end customer. However, the surface to which they are applied must be completely oxide-free, otherwise, defects occur which can cause subsequent corrosion or deterioration of the visual appearance of the product. The parts manufactured by wire electrical discharge machining, however, have a high tendency to oxidize. For this reason, this study was aimed at demonstrating the effect of machine setup parameters (gap voltage, pulse on and off time, wire feed and discharge current) on oxygen occurrence on the surface of two non-metallic (aluminium alloy 7475-T7351, chromium nickel superalloy Inconel 625) and four metallic materials (tool alloy steel X210Cr12, Hadfield steel, Creusabro 4800 and Hardox 400). Within this study, 18 samples were produced, where the chemical composition of energy-dispersive X-ray was analysed, on the basis of which the effect of these parameters on the surface oxidation was proved.

scholarly journals Electrochemical Restructuring of Copper Surfaces Using Organic Additives and Its Effect on the Electrocatalytic Reduction of Nitrate Ions

2015 ◽  
Vol 68 (8) ◽  
pp. 1213 ◽  
Author(s):  
Ali Balkis ◽  
Anthony P. O'Mullane
Keyword(s):  
Phenylacetic Acid ◽  
Surface Oxidation ◽  
Organic Additives ◽  
Potential Cycling ◽  
Copper Surfaces ◽  
Nitrate Ions ◽  
Electrode Surfaces ◽  
Copper Electrodes ◽  
Electrocatalytic Performance ◽  
Simple Potential

This work describes the fabrication of nanostructured copper electrodes using a simple potential cycling protocol that involves oxidation and reduction of the surface in an alkaline solution. It was found that the inclusion of additives, such as benzyl alcohol and phenylacetic acid, has a profound effect on the surface oxidation process and the subsequent reduction of these oxides. This results in not only a morphology change, but also affects the electrocatalytic performance of the electrode for the reduction of nitrate ions. In all cases, the electrocatalytic performance of the restructured electrodes was significantly enhanced compared with the unmodified electrode. The most promising material was formed when phenylacetic acid was used as the additive. In addition, the reduction of residual oxides on the surface after the modification procedure to expose freshly active reaction sites on the surface before nitrate reduction was found to be a significant factor in dictating the overall electrocatalytic activity. It is envisaged that this approach offers an interesting way to fabricate other nanostructured electrode surfaces.

scholarly journals The role of carbon nanotubes in enhanced charge storage performance of VSe2: experimental and theoretical insight from DFT simulations

RSC Advances ◽  
2020 ◽  
Vol 10 (53) ◽  
pp. 31712-31719
Author(s):  
Sree Raj K. A. ◽  
Afsal S. Shajahan ◽  
Brahmananda Chakraborty ◽  
Chandra Sekhar Rout
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
Hybrid Structure ◽  
Charge Storage ◽  
Multiwalled Carbon ◽  
Storage Performance ◽  
Dft Simulations ◽  
Supercapacitor Applications ◽  
Theoretical Insight

Hybrid structure of VSe2 and multiwalled carbon nanotube for high performance supercapacitor applications.

scholarly journals Three-dimensional NiCoP hollow spheres: an efficient electrode material for hydrogen evolution reaction and supercapacitor applications

RSC Advances ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 4650-4656 ◽  
Author(s):  
Jiban K. Das ◽  
Aneeya K. Samantara ◽  
Saumya Satyarthy ◽  
Chandra Sekhar Rout ◽  
J. N. Behera
Keyword(s):  
Hydrogen Evolution Reaction ◽  
Electrode Material ◽  
Hollow Spheres ◽  
Three Dimensional ◽  
Single Step ◽  
Charge Storage ◽  
Metal Phosphide ◽  
Storage Performance ◽  
Scalable Synthesis ◽  
Supercapacitor Applications

This work reports a single-step hydrothermal method for the scalable synthesis of binary metal phosphide (NiCoP). Further, the electrocatalytic performance for HER and electrochemical charge-storage performance towards a supercapacitor were explored.

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