On the N-shaped Conductance and Hysteresis Behavior of Contact Glow Discharge Electrolysis

Allagui, Anis; Elwakil, Ahmed S.

doi:10.1016/j.electacta.2015.03.154

Cited by 13 publications

(12 citation statements)

References 29 publications

(43 reference statements)

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“…Furthermore, a relatively simple experimental apparatus is required. The current-voltage characteristic curves of CGDE have a general typical shape, regardless of the electrode material or the electrolyte used [25,29,[35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Contact Glow Discharge Electrolysis: Effect of Electrolyte Conductivity on Discharge Voltage

et al. 2020

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Contact glow discharge electrolysis (CGDE) can be exploited in environmental chemistry for the degradation of pollutants in wastewater. This study focuses on the employment of cheap materials (e.g., steel and tungsten) as electrodes for experiments of CGDE conducted in electrochemical cells with variable electrolytic composition. A clear correlation between breakdown voltage (VB)/discharge (or midpoint) voltage (VD) and the conductivity of the electrolyte is shown. Regardless of the chemical nature of the ionogenic species (acid, base or salt), the higher the conductivity of the solution, the lower the applied potential required for the onset of the glow discharge. Concerning practical application, these salts could be added to poorly conductive wastewaters to increase their conductivity and thus reduce the ignition potential necessary for the development of the CGDE. Such an effect could render the process of chemical waste disposal from wastewaters more economical. Moreover, it is evidenced that both VB and VD are practically independent on the ratio anode area to cathode area if highly conductive solutions are employed.

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Section: Introductionmentioning

confidence: 99%

Contact Glow Discharge Electrolysis: Effect of Electrolyte Conductivity on Discharge Voltage

et al. 2020

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“…Carbon graphite films were prepared using a two‐electrode CGDE setup as reported is previous papers ,,. A polycrystalline graphite rod of 0.5 cm diameter was slightly immersed in a 20 wt.% sulfuric acid solution and served as the plasma‐emitting cathode, and a large surface area platinum coil was used as the counter electrode .…”

Section: Methodsmentioning

confidence: 99%

Band‐Pass Filter and Relaxation Oscillator using Electric Double‐Layer Capacitor

et al. 2018

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Supercapacitors are electrochemical devices that can store and restore electrical energy and are mostly used for powering dc or close‐to‐dc applications. As such they have not been explored enough for non‐dc circuits. In this study, we implement a band‐pass for frequency selectivity purposes and a relaxation oscillator for timing applications using a solid‐state carbon electric double‐layer capacitor. The expected behavior was observed for both circuits in the sub‐Hertz and tens of Hertz frequency ranges. This confirms the possibility of using the frequency‐dependent capacitive behavior of such devices in non‐conventional low frequency applications not related to dc energy storage but requiring large time constants.

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“…Submerged nonthermal microplasmas can be realized by biasing a small electrode, slightly in contact with an electrolyte, with a high enough positive or negative DC voltage, relative to a much larger counter electrode. [1][2][3][4][5][6][7][8] The optical emissions can be visually localized within a thin gaseous sheath of a few tens of micrometers that forms around the smaller electrode, thus insulating it from the surrounding solution. [1,3,4,7] If, for whatever reason, the gas film is breached by the moving liquid boundary, there will be a very fast surge in power to reform it again and re-establish the plasma regime, which makes the process somehow self-sustaining.…”

Section: Introductionmentioning

confidence: 99%

“…The microplasma system consisted of a small Pt electrode of 0.5-mm diameter, barely in contact with an anolyte solution of 1-mol/L H 2 SO 4 , and a large surface area Pt foil serving as the counter electrode. [3][4][5] The spacing between the two electrodes was about 3 cm. The Pt needle was negatively polarized in all experiments, using a programmable Sorensen (Ametek) XG 300-5 DC power supply.…”

Section: Introductionmentioning

confidence: 99%

“…Here, as mentioned in the experimental section, the setup consisted of nonoxidizable Pt cathode of 0.5-mm diameter paired with a large area Pt counter electrode, with all being submerged in a solution of 1-mol/L H 2 SO 4 . [3][4][5] However, it is expected that changes in the electrochemical components and conditions may affect the electrical and optical dynamics of the microplasma, and hence the statistical metrics of the raw data and subsequent bitstreams.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Parallel random bitstreams from a single source of entropy based on nonthermal electrochemical microplasma

Allagui

Elwakil

Rojas

et al. 2020

Plasma Processes & Polymers

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On the N-shaped Conductance and Hysteresis Behavior of Contact Glow Discharge Electrolysis

Cited by 13 publications

References 29 publications

Contact Glow Discharge Electrolysis: Effect of Electrolyte Conductivity on Discharge Voltage

Contact Glow Discharge Electrolysis: Effect of Electrolyte Conductivity on Discharge Voltage

Band‐Pass Filter and Relaxation Oscillator using Electric Double‐Layer Capacitor

Parallel random bitstreams from a single source of entropy based on nonthermal electrochemical microplasma

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