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Tuning of the band gap, structural, morphological, electrical, and magnetic properties of LaMn<sub>1 - x</sub>Fe<sub>x</sub>O<sub>3</sub> for x = 0, 0.1, 0.2 and 0.3 manganite nanoparticles. [PDF]
Sci RepAli L +6 more
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Berberine-Functionalized Graphene Oxide Nanocomposite for Enhanced Corrosion Protection of Epoxy-Coated Copper in Marine Environments. [PDF]
Materials (Basel)Lgaz H.
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Research on the initial corrosion behavior of A100 steel in salt fog-SO2 environment. [PDF]
RSC AdvZhang Y +6 more
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Electrochimica Acta, 1990
The dispersive behaviour observed at rough electrodes can be described by a constant phase element (CPE) of the form Z(ω) = K(jω)−α, where α has a value between 0·5 (porous electrodes) and unity (ideally flat electrodes). It is shown experimentally, that α unequivocally reflects the roughness of solid electrodes and is independent of the electrode ...
U. Rammelt, G. Reinhard
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The dispersive behaviour observed at rough electrodes can be described by a constant phase element (CPE) of the form Z(ω) = K(jω)−α, where α has a value between 0·5 (porous electrodes) and unity (ideally flat electrodes). It is shown experimentally, that α unequivocally reflects the roughness of solid electrodes and is independent of the electrode ...
U. Rammelt, G. Reinhard
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Impedance of constant phase element (CPE)-blocked diffusion in film electrodes
Journal of Electroanalytical Chemistry, 1998Abstract We construct a model of ac impedance response to blocked linear diffusion that has a sloped low frequency region in the impedance plot. The approach is based on the transmission line analogy to linear diffusion, and it is equivalent to solving Fick’s law with a boundary condition that allows us to set an arbitrary impedance response at low ...
J Bisquert +4 more
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Electrochimica Acta, 2017
Abstract Several issues concerning constant-phase element (CPE) behavior in the impedance response of films with a distributed resistivity are addressed here. To carry it out we consider two theoretical distributed models that account for exact CPE behavior and which provided us with the phenomenology of power-law frequency responses usually found in
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Abstract Several issues concerning constant-phase element (CPE) behavior in the impedance response of films with a distributed resistivity are addressed here. To carry it out we consider two theoretical distributed models that account for exact CPE behavior and which provided us with the phenomenology of power-law frequency responses usually found in
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Electrochimica Acta, 2017
Abstract The derivation of mathematical models accounting for the variation of physical properties along the thickness of thin systems such as oxide films, organic coatings and biological tissues, has been a challenging problem addressed for decades.
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Abstract The derivation of mathematical models accounting for the variation of physical properties along the thickness of thin systems such as oxide films, organic coatings and biological tissues, has been a challenging problem addressed for decades.
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Concerning the use of constant phase elements (CPEs) in the analysis of impedance data
Materials and Corrosion, 2010AbstractImpedance spectra obtained for Al6061 samples that had been anodized and sealed in two different processes and subjected to thermal cycling at three different temperatures have been analyzed using the Equivcrt software using a three‐time constant model with four constant phase elements (CPEs).
Y. Huang, H. Shih, F. Mansfeld
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Contribution of Surface Roughness to Constant-Phase Element (CPE) Behavior
ECS Meeting Abstracts, 2015While CPEs are commonly used to improve the fit to experimental impedance spectra, the explanation for their origin has been largely conjectural. In early experiments on solid electrodes, micro-scale surface roughness was believed to contribute to the non-ideality of electrochemical measurements.1 Borisova and Ershler were the first to
Christopher L. Alexander +2 more
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