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Showing 1 to 20 of 205 for “"Electrochemical Impedance Spectroscopy"”.
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Electrochemical Impedance Spectroscopy using adjustable nanometer-gap electrodes
Electrochemical Impedance Spectroscopy (EIS) is a simple yet powerful chemical analysis technique for measuring the electrical permittivity and conductivity of liquids and gases. Presently, the limiting factor for using EIS as a portable chemical detection technology is the lack of absolute …
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Electrochemical impedance spectroscopy of proton exchange membrane fuel cell stacks
Electrochemical Impedance Spectroscopy (EIS) is applied to a small, four cell Proton Exchange Membrane (PEM) fuel cell stack to examine the stack response as the load current changes. The measured stack response is compared to a simulated response generated by a stack model that has been developed …
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Linear and Nonlinear Electrochemical Impedance Spectroscopy for Lithium-ion Batteries
… improving battery safety, cost, and lifetime. Electrochemical impedance spectroscopy (EIS) is a powerful and widely used technique for noninvasively characterizing many electrochemical systems including lithium-ion batteries; however, the restriction of probing only the linearized physics …
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The design of sensor interface circuits for electrochemical impedance spectroscopy
Electrochemical Impedance Spectroscopy (EIS) has gained attention in biomedical applications—such as DNA, antigen–antibody, and virus detection—due to its label-free nature and high sensitivity. The development of EIS circuits with low power consumption, reduced complexity, and faster measurement …
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Electrochemical impedance spectroscopy options for proton exchange membrane fuel cell diagnostics
Electrochemical impedance spectroscopy (EIS) has been exploited as a rich source of Proton Exchange Membrane Fuel Cell (PEMFC) diagnostic information for many years. Several investigators have characterized different failure modes for PEMFCs using EIS and it now remains to determine how this …
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Electrochemical impedance spectroscopy and surface plasmon resonance for diagnostic antibody detection
… e.g. Surface Plasmon Resonance (SPR), and electrochemical detection, in particular Electrochemical Impedance Spectroscopy (EIS), have been shown viable for detection of lower affinity antibodies, based on the principle that these technologies allow the measurement of antibody binding to …
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Using electrochemical impedance spectroscopy to characterize vertically-aligned carbon nanotube forest porosimetry
… (VA-CNTs) have been used in applications for electrochemical systems in energy storage systems and desalination systems. Typical methods of characterizing the morphology and composition of CNTs are limited in providing information on the packing density of CNTs, and therefore, an effective …
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Implementing Electrochemical Impedance Spectroscopy for the In Situ Analysis Of Conducting-Membrane Fouling
… from yet another perspective using a powerful electrochemical technique known as electrochemical impedance spectroscopy (EIS). EIS is a non-destructive electrical perturbative method, thus it can be performed during filtration. While some research groups have applied EIS for membrane …
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Condition monitoring of lithium-ion batteries using broadband multisine excitation and electrochemical impedance spectroscopy
Electrochemical Impedance Spectroscopy (EIS) is a well-known technique that has been employed on various electrochemical cells to obtain their impedance spectra. Lithium-ion(Li-ion) cells are some of the cells to which it has been applied. The impedance spectra obtained from EIS can be used to …
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Electrochemical impedance spectroscopy as a method of predict delamination of coated steel in cathodic disbondment tests
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
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In-depth study and analysis of lithium-ion battery states using battery degradation data from electrochemical impedance spectroscopy
… temperature (SOT), and state of power (SOP). The Electrochemical impedance spectroscopy (EIS) technique is a degradation diagnostic tool. The thesis covered the EIS principles, measurement techniques, and impedance data interpretation specific to LIB. A lithium nickel cobalt aluminium oxide …
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Non-destructive Microstructural Evaluation Of Yttria Stabilized Zirconia, Nickel Aluminides And Thermal Barrier Coatings Using Electrochemical Impedance Spectroscopy
… The objective of this study is to develop electrochemical impedance spectroscopy (EIS) as a Non-destructive evaluation (NDE) technology for application to TBCs. To have a better understanding of the multilayer TBCs using EIS they were divided into individual layers and EIS were performed on …
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In-vitro characterization of boronized titanium alloy by means of corrosion and electrochemical impedance spectroscopy methods in simulated body fluids
… unboronized and boronized titanium using both electrochemical corrosion methods and Electrochemical Impedance Spectroscopy (ELS) in simulated body fluid. Using electrochemical methods the corrosion rate of boronized titanium decreased from 1.5 x 10^{-4} MPY to 8.67 x 10^{-5} MPY, while the …
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Electrochemical impedance modelling of the reactivities of dendrimeric poly(propylene imine) DNA nanobiosensors
In this thesis, I present the electrochemical studies of three dendrimeric polypropylene imine (PPI) nanomaterials and their applications as a platform in the development of a novel label free DNA nanobiosensor based on electrochemical impedance spectroscopy. Cyclic voltammetry (CV), differentia …
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Method of Measuring Ohmic Resistance in Aluminium Reduction Cells
… due to the Nernst potential and polarisation. Electrochemical impedance spectroscopy can be used to directly measure ohmic resistance at the laboratory scale, but it is not suitable for an industrial aluminium reduction cell because an alternating current of the required magnitude and …
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The Effect of Buckling on the Interface Conductance in Flexible Lithium-Ion Batteries
… electrolyte were fabricated. The interfacial impedance in fresh and cycled flexible LIBs was investigated in flat and buckled configurations using electrochemical impedance spectroscopy (EIS). It is demonstrated that with increasing value of curvatures, contact resistances between components …
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Lanksčių anglinių nanovamzdelių dangų gamyba, modifikavimas ir tyrimas /
… measuring the electrical resistance and using electrochemical impedance spectroscopy. Moreover, coatings were tested using a contact angle measurement method to determine the total surface energy and its components. Morphology of coatings was analysed by AFM and SEM. Besides, Raman spectroscopy …
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A study of the electrolytic reduction of corroded lead objects and the application, characterization and testing of a protective lead carboxylate coating
… and conserve active corroded lead is an electrochemical reduction. In this work we have tried to shed some light onto the process. First of all, a fundamental study was performed to understand the mechanism of the ongoing reduction and how it affects the profile of the corresponding …
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Synthesis and characterization of purely sulphonated and composite membranes for high temperature fuel cells
… analysis (TGA), Fourier transmission infrared spectroscopy (FT-IR), electrochemical impedance spectroscopy (used to determine proton conductivity) and fuel cell performance.
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Synthesis and properties of some electrolyte additives for lithium-ion batteries
… basis set. Subsequently, cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the compounds in terms of their usefulness as electrolyte additives. At least two of these show excellent promise for use in lithium-ion batteries.
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