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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 54 for “"Working electrode"”.
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Structural Characterization of the Interfacial Structure of the Working Electrode in Dye-sensitized Solar Cells Using X-ray and Neutron Techniques
… buildings. Typically, DSSCs contain a working electrode (photoanode) that consists of a dye adsorbed onto the surface of a semiconductor (often TiO2), where photo-induced electrons are injected into the conduction band (CB) of the semiconductor; the electrical current passes to the …
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Electrochemical Measurement of Metal Ions in Water
… water by square wave anodic stripping on a gold working electrode. The rate constant of the anodic stripping of Pb0 from gold has a rate constant of approximately k0 = 3 s-1. A set of square wave profiles defined by step height = 1 mV, pulse height = 30 mV, and pulse width = 50, 100, 200 ms yield …
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Analysis of Electrode Geometric Parameters on AC Impedance Response
… AC impedance response. A conventional three electrode EIS method was used to perform the investigation in the present study. Saturated potassium chloride solution was used as the electrolyte, and three different material rods were used as working electrodes. Different configurations of …
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Electrochemical impedance modelling of the reactivities of dendrimeric poly(propylene imine) DNA nanobiosensors
… of the nanomaterials on glassy carbon electrode (GCE) as the working electrode.
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Development and analysis of novel photoelectrochemical reactor for solar based clean hydrogen production
… The unique conic-mesh structural design of the working electrode adapted to provide a passive solar-light tracking characteristic to the system enhancing the solar light absorption throughout daylight time. In sequence, electrodeposition and sol-gel dip coating techniques are practiced …
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Determination of formaldehyde by ion exclusion and ion exchange separation with amperometric detection
… have been determined, as well as the optimum working electrode, electrolytes, and applied potentials for the best detection. An internal standardization was used to correct for detector drift. An interference study was performed for organic acids, other aldehydes, and alcohols. Using impingers …
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Electrochemical Sensor for Metal Ions and Phosphate Ion Detection for Biomedical and Agriculture Application
… oxide/silver nanowire (GO/AgNWs) composite as working electrode. The phosphate electrochemical sensors were fabricated using ammonium molybdate tetrahydrate/silver nanowires (AMT/AgNWs) modified screen printed electrode. Most of the heavy metals such as mercury, lead, cadmium, and arsenic have …
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Establishing nanoscopic structure-function relationships in the working electrodes of dye-sensitized solar cells
… semiconductor such as TiO2, to form the working electrode. The nature by which such surfaces are sensitized stands to influence the resulting dye···TiO2 interfacial structure and thence the operational performance of the DSSC working electrode. To this end, atomic force microscopy is …
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ΜΕΛΕΤΗ ΤΟΥ ΜΗΧΑΝΙΣΜΟΥ ΤΗΣ ΗΛΕΚΤΡΟΧΗΜΙΚΗΣ ΑΝΑΓΩΓΗΣ ΤΟΥ ΑΛΟΥΜΙΝΙΟΥ ΑΠΟ ΤΗΓΜΑΤΑ ΧΛΩΡΙΟΥΧΩΝ ΚΑΙ ΧΛΩΡΟΦΘΟΡΙΟΥΧΩΝ ΑΛΑΤΩΝ ΣΤΟΥΣ 450 C
… ALCL3, WAS STUDIED ON SILVER AND PLATINUM ELECTRODES. FOR THIS PURPOSE THE METHODS OF LINEAR SWEEP VOLTAMMETRY, CHRONOPOTENTIOMETRYAND CHRONOAMPEROMETRY, AS WELL AS THE CONVOLUTIONAL ANALYSIS, WERE USED. MOREOVER A SIMPLE ANALYTICAL METHOD PERMITTING THE SOLUTION OF THE SYSTEM OF THE …
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Scanning electrochemical microscopy for the investigation of biosensors /
… after the immobilization on a carbon felt electrode. The in-situ microorganism assisted polymerization with Aspergillus niger and Rhizoctania sp. cells was studied amperometrically by immobilizing them on a graphite rod and using it as a working electrode. The modification was also tested …
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ΚΑΤΑΣΚΕΥΗ ΣΥΣΤΗΜΑΤΟΣ ΑΝΑΔΙΑΛΥΤΙΚΗΣ ΠΟΤΕΝΣΙΟΜΕΤΡΙΑΣ ΕΛΕΓΧΟΜΕΝΟΥ ΑΠΟ ΜΙΚΡΟΥΠΟΛΟΓΙΣΤΗ-ΓΕΝΙΚΕΣ ΜΕΛΕΤΕΣ ΣΤΗ ΜΕΘΟΔΟ ΚΑΙ ΑΝΑΛΥΤΙΚΕΣ ΕΦΑΡΜΟΓΕΣ
… OUT. 3. MEMORY EFFECTS ON THE MERCURY COATED WORKING ELECTRODE HAVE BEEN EXAMINED. 4. A GENERAL STUDY OF METAL INTERFERENCES IN PSA HAS BEEN MADE. 5. THE PROBLEMS CAUSED BY THE FORMATION OF INTERMETALLIC COMPOUNDS HAVE BEEN STUDIED. 6. THE FORMATION OF INTERMETALLIC COMPOUNDS BETWEEN ZNAND CU …
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Optimization of Electrode Configurations for Calibration-Free, Remote Sensing of Heavy Metals in Water Using Double-Potenital Step Anodic Coulometry
… Louisville as a proof of concept, but the cost, electrode fabrication, and complex assembly requirements limit commercial viability and motivate this work. We are targeting electrodes that can be inkjet printed directly onto a 3D-printed polymer electrochemical cell, simplifying the manufacturing …
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A Study on the Use of Inverse Opals Composed of Zinc Oxide Aggregate Popcorn Particles to Improve the Efficiency of Dye- Sensitized Solar Cells
"In this work, modifications applicable to the working electrode of a dye--‐sensitized solar cell (DSSC) are explored in order to enhance efficiency. Certain compositional and structural changes to the architecture of the electrode are examined. First, the ZnO nanoparticles that are commonly …
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Electrochemical and photoelectrochemical oxidation of selected organic compounds on TiO2 electrodes and the effect of adsorption on the oxidation potentials
… optically transparent SnO$\sb2$ conducting glass electrodes. The oxidation potentials of Resorcinol (RSRCL), 4-Chlororesorcinol (4-CR), 4,6-Dichlororesorcinol (4,6-DCR), Catechol (CC), 3,4-Dihydroxybenzoic acid (3,4-DHBA), and 1,2,4-benzenetriol (1,2,4-THB) in 0.5M KCl were measured. The effect of …
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Effect of temperature on the association constants of some divalent metal ions with chloride in sea water-like solutions
… voltammetry was used with a conventional three electrode system and a thin-film working electrode of Pt/Hg. Complex formation was followed as a function of the ligand concentration by observing the shift in the stripping peak potential E<sub>p</sub>.<p>The measured E<sup>p</sup> and temperature …
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Modeling the operating voltage of liquid metal battery cells
… alloys and calibrate a two-phase Mg-Sb reference electrode. The charge transfer kinetics at the alloying electrode were studied using the galvanostatic pulse method and a novel working electrode design. The contribution of the charge transfer reaction to the cell operation was found to be …
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Aminoxyl Catalyzed Electrochemical Ethanol Detection: Development of a New Breathalyzer Using Molecular Catalysis
… sensing element consists of a screen-printed electrode in which the graphene oxide-based working electrode is modified with aminoxyl derivatives, of which 4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl benzoate (TMB) was the most efficient derivative. Exposing this modified electrode to …
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Hydrogen overvoltage on titanium
… as the difference between the potential of the working electrode (cathode) and the theoretical reversible value for the same solution. This definition brings out the difficulty involved in the measurement of the "theoretical reversible potential for the same solution” as the potential of the …
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Factors Affecting Redox Magnetohydrodynamics for Flow in Small Volumes
… passive (unbiased) conductors relative to active electrodes on fluid flow using RMHD in cells provided evidence that the magnetic force resides primarily in the diffusion layer in these systems, not in the electrolyte between the counter and working electrodes. The effects of channel and working …
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Surface forces during electrophoretic assembly of micron scale silica particles
A system of platinum microelectrodes was fabricated on a sapphire substrate by lithographic patterning and used to manipulate 1.58 [mu]m silica particles in-plane. A digital video system was used to image the motion of particles far from the electrodes and their deposition onto the working …
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