Results 231 to 240 of about 7,169,794 (272)
On a possible physical origin of the constant phase element
Electrochimica Acta, 2016 Abstract Despite the numerous use of the constant phase element (CPE) in the modeling of the impedance characteristics of the electrochemical systems, the physical reasoning of this non-intuitive element is not clear. In this paper, the CPE impedance is analytically calculated using the anomalous diffusion theory.
Seyed M R Niya, Hossein Montazerian
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Constant-Phase-Element Behavior Caused by Resistivity Distributions in Films
Journal of The Electrochemical Society, 2010 CPE behavior may be attributed to the distribution of physical properties in films, in the direction normal to the electrode surface. Numerical simulations were used to show that, under assumption that the dielectric constant is independent of position, a normal power-law distribution of local resistivity is consistent with the Constant-Phase Element ...
B Hirschorn +5 more
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On the rate capability of supercapacitors characterized by a constant-phase element
Journal of Power Sources, 2021Abstract The capacitances of electrochemical systems determined from cyclic voltammetry (CV) are difficult to compare due to the unavoidable constant-phase element (CPE) behavior of such systems. These difficulties can be illustrated by simulated voltammograms of simplified circuits composed of a resistor in series with a CPE (R-CPE circuits).
Kirk J Ziegler +2 more
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Nonlinear charge-voltage relationship in constant phase element
AEU - International Journal of Electronics and Communications, 2020Abstract The constant phase element (CPE) or fractional-order capacitor is an electrical device that has an impedance of the form Z ( s ) = 1 / C α s α , where C α is the CPE parameter and α is a fractional dispersion coefficient of values between 0 and 1.
Anis Allagui +2 more
exaly +2 more sources
A constant phase element sensor for monitoring microbial growth
Sensors and Actuators B: Chemical, 2006The construction and performance of a novel constant phase element (CPE) sensor for monitoring microbial growth has been reported in this paper. The signal conditioning circuit measures the changes in the phase angle of the impedance characteristics of the probe.
Siddhartha Sen +2 more
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Realization of a Constant Phase Element and Its Performance Study in a Differentiator Circuit
IEEE Transactions on Circuits and Systems Part 2: Express Briefs, 2006A simple method for fabricating a constant phase element (CPE) has been discussed. Dependence of the phase angle on several physical parameters have also been elaborated. Finally, a fractional-order differentiator circuit has been constructed using the CPE, and its performance has been compared with the simulated ...
Karabi Biswas
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On the electrical capacitance of interfaces exhibiting constant phase element behaviour
Journal of Electroanalytical Chemistry, 1998Abstract It is stressed that any attempt to characterise the interfacial double layer exhibiting a constant phase element (CPE) behaviour by electrical capacitance is misleading. The only possibility to obtain the value of the interfacial double layer capacitance is to ascribe to the double layer a capacitive character.
Piotr Zoltowski
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Decoupling the magnitude and phase in a constant phase element
Journal of Electroanalytical Chemistry, 2021Abstract The success of fractional-order fractance (FOF) as a modeling tool in (photo)bio(electro)chemical systems can be readily gauged by the large body of research work that has been conducted over the past few years in terms of materials fabrication, building integer-order emulators of their behavior, as well as applications in filter design ...
Anis Allagui +2 more
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The Origin of the Constant Phase Element
The Journal of Physical Chemistry Letters, 2022The constant phase element (CPE) is usually observed at solid electrodes. It is a source of controversies and misunderstandings. In this Viewpoint, theory, properties, experimental results, and the origin of the CPE are presented and discussed.
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Realization of fractional order circuits by a Constant Phase Element
European Journal of Control, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Buscarino, A. +3 more
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