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Showing 1 to 17 of 17 for “"EQCM"”.
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Development of an EQCM-based sensor for metal ions
… electrochemical quartz crystal microbalance (EQCM)-based sensor for metal ions. Designed for use in the nuclear industry, the sensor consists of a gold (Au) piezoelectrode modified by a Nafion® polymer layer impregnated with a cationic hydroxainic acid (HA), a ligand showing oxidation state …
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Interfacial Study of Copper Electrodeposition with the Electrochemical Quartz Crystal Microbalance (EQCM)
The electrochemical quartz crystal microbalance (EQCM) has been proven an effective mean of monitoring up to nano-scale mass changes related to electrode potential variations at its surface. The principles of operation are based on the converse piezoelectric response of quartz crystals to mass …
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Production of nano-templated surfaces for quartz crystal microbalance
… an Electrochemical Quartz Crystal Microbalance (EQCM). Deposition onto the EQCM allowed the unconventional properties of the deposited film to be studied by interpretation of the response of simultaneous cyclic voltammetry and microgravimetry measurements. Based on some experimental observations …
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Einfluss ausgewählter Syntheseparameter auf die elektrochemischen und mechanischen Eigenschaften von Polypyrrol
… kamen die elektrochemische Quarzmikrowaage (EQCM) und die elektrochemische Impedanzspektroskopie (EIS) zum Einsatz. Bei der Auswertung der EQCM-Daten wurde ein von Efimov entwickeltes mathematisches Modell zur Bestimmung des komplexen Schermoduls angewendet. Dadurch war eine in situ …
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Electrochemistry of Polyaniline-DNA System.
… the electrochemical quartz crystal microbalance (EQCM) and the voltammetry techniques have been used to characterize the above system. Results revealed that during the surface composite formation, DNA is incorporated into the polyaniline and the poly-o-phenylenediamine) networks, respectively. DNA …
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Preparation and Application of Conducting Polymer-Carbon Nanotube Composite.
… electrolysis with coulometry, AC impedance, and EQCM techniques have been used to elucidate the preparation, ion transport, and intermolecular interaction processes within these composites.</p>
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Electrochemistry of Polypyrrole and Poly(N-methylpyrrole) and their DNA Composites.
… understand their equivalent circuit parameters. EQCM presents a more thorough understanding of ion movement into and out of the film. A new biosensor composed of poly(N-methylpyrrole), ssDNA, and GOx is presented. This glucose oxidase sensor has short response times and holds promise of being …
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Electrochemical studies of oxygen reduction for aprotic lithium-oxygen batteries
… and electrochemical quartz crystal microbalance (EQCM) methods, respectively. As the applied potential increases, the reaction mechanism for Li20 2 formation switches from solution to surface-mediated, with the most likely pathways being Li+-02- disproportionation and 2e- transfer to 02, …
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The effect of free chlorine and monochloramine on lead in drinking water and epitaxial electrodeposition of tin sulfide
… However, experimental results utilizing EQCM, XRD, and SEM show that NH₂Cl elevated Pb levels in water by oxidizing Pb or reducing PbO₂ films to soluble Pb²⁺ species. The solubility of PbO₂ in NH₂Cl increases if the concentration of NH₂Cl increases or the pH of the water decreases from pH …
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Mechanisms of fixed contamination of commonly engineered surfaces
… Electrochemical Quartz Crystal Microgravimetry (EQCM) measurements. Areas of active, passive, high voltage passive, transpassive and secondary passivation regimes in the associated current voltage were identified. Further, we have directly measured the growth of that layer by using in situ …
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Charge Storage Mechanism of Redox Polymers for Energy Storage
… microbalance with dissipation monitoring (EQCM-D). The solvation structures of charge carriers and swelling behaviors of polymers were investigated, and their implications for battery performance were discussed. The charge storage mechanism for a π-conjugated n-type polymer P(NDI2OD-T2) was …
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Investigating Layered Electrically Conductive Metal-Organic Frameworks For Supercapacitor Applications
… Electrochemical quartz crystal microbalance (EQCM) and three-electrode experiments are then performed with Cu<sub>3</sub>(HHTP)<sub>2</sub> and a series of electrolytes with different cation sizes to investigate both the charging mechanism of this MOF and how electrolyte ion size impacts …
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Entwicklung neuartiger biomimetischer Sensoren: ein bifunktionaler Sensor auf Basis haptenisierter Cholinesterase
… Die Verwendung solcher Sensoren mit einem EQCM-Gerät (electrochemical quartz crystal microbalance) ermöglicht es zwei Messsignale gleichzeitig aufzunehmen: die piezoelektrische Bestimmung einer Massebeladung und die amperometrische Detektion von Enzymaktivität auf der Sensoroberfläche. Für …
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Interfacial processes in Li-ion batteries
… of electrochemical quartz crystal microbalance (EQCM), and Matrix assisted laser desorption ionization (MALDI) time of flight (TOF) mass spectrometry (MS) measurements along with detailed calculations examining the formation of the solid electrolyte interphase (SEI) on battery anode electrodes. …
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Metal oxide electrocatalysts for alternative energy technologies
… Electrochemical quartz crystal microbalance (EQCM) studies and in situ electrochemical stress measurements were the techniques used to study and to understand the observed actuation mechanism. The bilayer polypyrrole/polythiophene (PPy PTh) polymer film showed potential for enhancing the …
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Exploring the Electrode-Electrolyte Interface of Electrically Conductive Layered Metal-Organic Frameworks with Nuclear Magnetic Resonance
… electrochemical quartz-crystal microbalance (EQCM) experiments. These measurements revealed that cations are the dominant contributor to charge storage in Ni3(HITP)2, with anions only marginally contributing to the charge storage. Despite this, NMR revealed significant in-pore anion …
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Surface studies of Li-ion and Mg battery electrodes
… Electrochemical quartz crystal microbalance (EQCM) was used to monitor changes in mass on the anode, SEM and AES were used to observe changes in surface morphology and chemical composition, and potentiostatic voltammetry was used to monitor charge and discharge capacity. The effect of Cu2+ …