Search results for: BINBO4 CERAMICS, IMPEDANCE SPECTROSCOPY, IMPEDANCE AND MODULUS ANALYSIS

• Impedance spectroscopy of undoped cerium oxide.

  Publication

  • P. Jasiński
  • T. Suzuki
  • H. U. Anderson

  - Year 2003

  W pracy przedstawiono badania impedancyjne niedomieszkowanego tlenku ceru. Wyniki wskazują na występowanie zjawiska dyfuzji,???? które nie są (.. jest.?)związane z odpowiedzią elektrodową. Rozważania teoretyczne dopuszczają obserwowanie impedancji Warburga, która reprezentuje zjawisko dyfuzji w przewodnikach mieszanych, jednakże niewiele informacji na ten temat można znaleźć w literaturze. W związku z tym szczegółowe badania zródła...

• Fault Diagnostics in PEMFC Stacks by Evaluation of Local Performance and Cell Impedance Analysis

  Publication

  • J. Mitzel
  • J. Sanchez‐Monreal
  • D. Garcia‐Sanchez
  • P. Gazdzicki
  • M. Schulze
  • F. Häußler
  • J. Hunger
  • G. Schlumberger
  • E. Janicka
  • M. Mielniczek
  • Ł. Gaweł

  - FUEL CELLS - Year 2020

  Starvation, flooding, and dry‐out phenomena occur in polymer electrolyte membrane fuel cells (PEMFCs), due to heterogeneous local conditions, material inhomogeneity, and uneven flow distribution across the single cell active area and in between the individual cells. The impact of the load level and air feed conditions on the performance was identified for individual single cells within a 10‐cell stack. Analysis of the current density...

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• Identification of the mechanical properties of the skin by electromechanical impedance analysis of resonant piezoelectric actuator

  Publication

  • Ł. Sienkiewicz
  • J. Rouchon
  • M. Ronkowski
  • G. A. Kostro
  • R. Ryndzionek

  - Year 2013

  This paper is devoted to the analysis and verification of developed piezoelectric sensor/actuator for measuring the mechanical properties of soft tissues, especially human skin. The key element of the measurement structure is an electromechanical system that uses both the reverse piezoelectric effect (vibration generation – stimulation of the tissues in the appropriate frequency range) and direct piezoelectric effect (system response...

• In-situ odd random phase electrochemical impedance spectroscopy study on the electropolymerization of pyrrole on iron in the presence of sodium salicylate – The influence of the monomer concentration

  Publication

  • K. Cysewska
  • L. Fernandez Macia
  • P. Jasiński
  • A. Hubin

  - ELECTROCHIMICA ACTA - Year 2018

  In this work, the potentiostatic electropolymerization of polypyrrole (PPy) on iron in aqueous solution of sodium salicylate and pyrrole is studied in situ by odd random phase electrochemical impedance spectroscopy (ORP-EIS). The influence of the pyrrole concentration on the electrosynthesis process is investigated. The ORP-EIS technique ensures a reliable analysis of the PPy electrosynthesis on iron by means of an advanced data...

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• Investigation of the electrochemical behaviour of AA1050 aluminium alloy in aqueous alkaline solutions using Dynamic Electrochemical Impedance Spectroscopy

  Publication

  • J. Wysocka
  • S. Krakowiak
  • J. Ryl
  • K. Darowicki

  - JOURNAL OF ELECTROANALYTICAL CHEMISTRY - Year 2016

  The paper presents the electrochemical behaviour of aluminium alloy AA1050 in aqueous alkaline media in the pH range 14–8.5. Electrochemical study was applied in order to obtain comprehensive information on the mechanism and kinetics of the process of anodic dissolution of aluminium, supplemented by monitoring of surface topography using an electron microscope. The corrosion rate of AA1050 increases with increasing concentration...

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• Instantaneous electrochemical impedance spectroscopy of electrode reactions

  Publication

  • K. Darowicki
  • P. Ślepski
  • K. Darowicki

  - ELECTROCHIMICA ACTA - Year 2004

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• Evaluation of coating systems using impedance spectroscopy

  Publication

  • A. Miszczyk
  • K. Darowicki

  - Year 2005

  Trwałość powłokowych systemów ochronnych zależy od oddziaływań środowiska i związana jest nieodwracalnymi procesami chemicznymi i fizycznymi. Zastosowanie spektroskopii impedancyjnej pozwala na określenie obszaru zastosowań danej powłoki i prognozowanie okresu jej trwałości. W pracy zamieszczono przykłady oceny trwałości systemów powłokowych stosowanych w strategicznych konstrukcjach.

• Instantaneous electrochemical impedance spectroscopy of electrode reactions.

  Publication

  • K. Darowicki
  • P. Ślepski

  - Year 2004

  Ustalona została ciągła transformata STFT sinusoidalnego sygnału pobudzeniai odpowiedzi prądowej dla pierwszorzędowej reakcji elektrodowej. Impedancja elektrodowa wyznaczona została w łącznej dziedzinie czasowo-częstotliwościowej. Wykonano pomiary reakcji redukcji Cd(II) na kapiącej elektrodzie rtęciowej w funkcji czasu. Zaprezentowano możliwość wyznaczania chwilowych widm impedancyjnych. Opisano czasowe charakterystyki rezystancji...

• Solid State Conductivity of Optimized Polypyrrole Coatings on Iron Obtained from Aqueous Sodium Salicylate Solution Determined by Impedance Spectroscopy

  Publication

  • K. Cysewska
  • F. Singer
  • P. Jasiński
  • S. Virtanen

  - International Journal of Electrochemical Science - Year 2014

  In this work the optimization procedure for corrosion resistance, surface analysis and electrical properties of PPy-Fe electrodes have been examined. Polypyrrole (PPy) film was electrochemically synthesized in a one step process from an aqueous solution of sodium salicylate and pyrrole with certain concentrations, different parameters and type of polymerization...

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• Impedance evaluation of coatings from biobased material

  Publication

  • M. Szociński
  • K. Darowicki

  - Surface Innovations - Year 2018

  The authors propose a modification of sodium caseinate edible coating for foodstuff protection. The aim was to improve the film’s barrier properties. It was achieved by the addition of propolis, which is a natural, environmentally friendly product known from its intrinsic sealing action. In the next step, propolis-admixed sodium caseinate films were exposed to elevated temperature for 10 min. This approach was meant to improve...

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• A Probe into the Corrosion Behavior of a WE43B Magnesium Alloy in a Simulated Body Fluid using Dynamic Electrochemical Impedance Spectroscopy

  Publication

  • H. Gerengi
  • S. Lorenzi
  • M. Solomon
  • P. Ślepski
  • M. Cabrini

  - JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE - Year 2023

  WE43B is one of the newest Mg alloys with practical application in biomedical implant technology. This work attempts to scrutinize the corrosion characteristics of WE43B alloy in a simulated body fluid (SBF) at a typical body temperature. The dynamic-electrochemical impedance spectroscopy with the capacity to track changes on surfaces in a dynamic corrosive system is used in combination with other classical techniques namely, linear...

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• The electrochemical impedance spectroscopy studies of the anode material based on polymer and starch derived ceramic for lithium ion batteries

  Publication

  • A. Nowak
  • A. Lisowska-Oleksiak

  - Biuletyn Polskiego Stowarzyszenia Wodoru i Ogniw Paliwowych - Year 2013

  The anode materials derived of preceramic polymer poly(1,2-dimethylsilazane) (PSN) and starch was study. Commercially available polysilazane (poly(1,2-dimethylsilazane (PSN 2M01 Gelest) was mixed with commercially available starch (POCH Gliwice). The ratio polymer/starch (PSN/starch) was 1/1 or 3/7. The polysialazane/starch blend was cross-linked at 230 ºC for 2 h followed by heating to the final temperature (500 ºC, 700 ºC and...

• Validation of dynamic electrochemical impedance spectrograms using autocorrelation function

  Publication

  • K. Darowicki
  • S. Wysmułek
  • A. Karólkowska
  • Ł. Gaweł

  - JOURNAL OF ELECTROANALYTICAL CHEMISTRY - Year 2024

  Validation of impedance data is essential for checking the reliability of experimental data. Kramers – Kronig transformation is used to verify data obtained from classical Electrochemical Impedance Spectroscopy (EIS) measurements. Data obtained from Dynamic Electrochemical Impedance Spectroscopy (DEIS) could be validated in the same way, but in this case, there is no information about internal consistency between every single spectrum...

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• Using A Particular Sampling Method for Impedance Measurement

  Publication

  • G. Lentka

  - Metrology and Measurement Systems - Year 2014

  The paper presents an impedance measurement method using a particular sampling method which is an alternative to DFT calculation. The method uses a sine excitation signal and sampling response signals proportional to current flowing through and voltage across the measured impedance. The object impedance is calculated without using Fourier transform. The method was first evaluated in MATLAB by means of simulation. The method was...

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• Enhanced capacitance of composite TiO2 nanotube / boron-doped diamond electrodes studied by impedance spectroscopy

  Publication

  • K. Siuzdak
  • M. Sawczak
  • R. Bogdanowicz
  • M. Sobaszek

  - NANOSCALE - Year 2015

  We report on the novel composite nanostructures based on boron-doped diamond thin film grown on top of TiO2 nanotubes. The nanostructures made of BDD-modified titania nanotubes showed an increase in activity and performance when used as electrodes in electrochemical environments. The BDD thin films (~200-500 nm) were deposited using microwave plasma assisted chemical vapor deposition (MW PA CVD) onto anodically fabricated TiO2...

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• Novel application of dynamic electrochemical impedance monitoring to a cataphoretic coating process

  Publication

  • K. Darowicki
  • P. Ślepski
  • M. Szociński

  - PROGRESS IN ORGANIC COATINGS - Year 2020

  The paper presents a novel method of on-line impedance monitoring of cataphoretic coating application process. Utilization of dynamic electrochemical impedance spectroscopy (DEIS) overcame the fundamental problem connected with non-stationarity of the aforementioned coating deposition process, which eliminates classical impedance spectroscopy technique from a real-time description of cataphoresis. The paper illustrates selected examples...

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• Impedance monitoring of fuel cell stacks

  Publication

  • P. Ślepski
  • E. Janicka
  • K. Darowicki
  • B. Pierożyński

  - JOURNAL OF SOLID STATE ELECTROCHEMISTRY - Year 2015

  This paper presents an innovative, electrochemical impedance method for monitoring of electrochemical behaviour of a multi-cell, direct methanol fuel cell (DMFC) device. This method not only provides classical voltage changes at successive cells but also allows their detailed impedance behaviour to be presented. Impedance characteristics of individual cells within a fuel cell stack (depending on actual operating conditions) are...

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• Differential analysis of impedance data

  Publication

  • K. Darowicki
  • K. Darowicki

  - ELECTROCHIMICA ACTA - Year 1998

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• The amplitude analysis of impedance spectra

  Publication

  • K. Darowicki

  - ELECTROCHIMICA ACTA - Year 1995

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• Application of dynamic impedance spectroscopy to atomic force microscopy

  Publication

  • K. Darowicki
  • A. Zieliński
  • J. K. Kurzydłowski

  - SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS - Year 2008

  Mikroskopia sił atomowych jest uniwersalną techniką obrazowania powierzchni podczas gdy spektroskopia impedancyjna jest fundamentalną metodą charakteryzowania właściwości elektrycznych materiałów. Z powyższego względu użyteczne jest połączenie powyższych technik dla uzyskania przestrzennego rozkładu wektora impedancji. W pracy autorzy proponują nowe podejście polegające na połączeniu multiczęstotliwościowego pomiaru impedancyjnego...

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• Application of Dynamic Impedance Spectroscopy to Scanning Probe Microscopy

  Publication

  • M. Tobiszewski
  • A. Arutunow
  • K. Darowicki

  - MICROSCOPY AND MICROANALYSIS - Year 2014

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• Application of dynamic impedance spectroscopy to atomic force microscopy

  Publication

  • K. Darowicki
  • K. J
  • A. Zieliński

  - SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS - Year 2008

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• Reassesing whole tooth electrical impedance spectroscopy measurements

  Publication

  • M. Penkowski
  • B. Truyen
  • K. Lewandowska
  • P. Bottenberg
  • L. Henin
  • J. Wtorek
  • J. Cornelis

  - CARIES RESEARCH - Year 2006

  W pracy dokonano krytycznej oceny wyników wcześniejszych badań spektorskopowych zębów przeprowadzonych w innych ośrodkach i porównano je z własnymi. Wskazano na trudności występujące podczas pomiarów.

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• Measurement microsystem for high impedance spectroscopy of anticorrosion coatings

  Publication

  • J. Hoja
  • G. Lentka
  • R. Zielonko

  - Metrology and Measurement Systems - Year 2002

  W artykule przedstawiono mikrosystem do pomiarów bardzo dużych impedancji ukierunkowany na identyfikację parametrów powłok antykorozyjnych metodą spektroskopii impedancyjnej. Do wyznaczania składowych ortogonalnych sygnałów pomiarowych zastosowano w nim technikę cyfrowego przetwarzania sygnałów. Pozwoliła ona na uzyskanie szerokiego zakresu częstotliwości pomiarowych, zwłaszcza bardzo niskich, od ćHz, przy zachowaniu prostej konstrukcji...

• Uncertainty estimation of loop impedance measurement determined by the vector method

  Publication

  • A. Golijanek-Jędrzejczyk

  - Measurement Automation Monitoring - Year 2012

  This article presents a detailed analysis of uncertainty estimation of loop impedance measurement determined by the vector method. The analysis includes the following estimates: resistance variance, voltage variance and time measurement variance. This paper presents a methodology for estimating the combined standard uncertainty of loop impedance by the vector method. The vector method allows to determine loop impedance based on...

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• The impact of air humidity on the operation of proton exchange membrane fuel cells determined using dynamic electrochemical impedance spectroscopy

  Publication

  • E. Janicka
  • M. Mielniczek
  • Ł. Gaweł
  • K. Darowicki
  • P. Landowska

  - ELECTROCHIMICA ACTA - Year 2020

  This paper describes the changes in the fuel cell impedance across a range of current loads and humidity changes. The changes of each equivalent circuit parameters representing specific processes occurring in fuel cells, as a function of humidity and current changes, were determined. Within the combined scope of current and humidity, the optimal working conditions of the cells were determined, corresponding to the lowest impedance...

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• Miniaturized impedance analyzer using AD5933

  Publication

  • J. Hoja
  • G. Lentka

  - Year 2013

  The paper presents the analyzer allowing to measure impedance in a range of 10 ohms <|Zx|<10 Gohms in a wide frequency range from 10 mHz up to 100 kHz. The device specific features are: miniaturization, low power consumptions and the use of impedance measurement method based on DSP. These features were possible thanks to the use of newest generation of large scale integration chips: e.g. „system on a chip” microsystems (AD5933)...

• Miniaturized impedance analyzer using AD5933

  Publication

  • J. Hoja
  • G. Lentka

  - Year 2015

  The paper presents the analyzer allowing to measure impedance in a range of 10 ohms <|Zx|<10 Gohms in a wide frequency range from 10 mHz up to 100 kHz. The device specific features are: miniaturization, low power consumptions and the use of impedance measurement method based on DSP. These features were possible thanks to the use of newest generation of large scale integration chips: e.g. „system on a chip” microsystems (AD5933)...

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• Instantaneous Impedance Analysis of Non-Stationary Corrosion Process: a Case Study of Carbon Steel in 1M HCl

  Publication

  • J. Ryl
  • Ł. Gaweł
  • M. Cieślik
  • H. Gerengi
  • G. Lentka
  • P. Slepski

  - International Journal of Electrochemical Science - Year 2017

  The paper concerns the problem of evaluation of stationarity of carbon steel corrosion in 1M HCl. Comparison of corrosion rate with addition of corrosion inhibitor to the reference measurement is the most often used way of evaluating inhibitor efficiency. Such an approach is valid only if corrosion rate is a stationary process. Two complementary techniques were used simultaneously: volumetric analysis of evolved hydrogen and instantaneous...

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• Impulse Impedance Measurements of Lightning Protection Earthings

  Publication

  • T. Horchue
  • W. Tangtheerajaroonwong
  • S. Wojtas
  • M. Wołoszyk

  - Year 2019

  Lightning protection earthing systems should be tested at currents with time parameters similar to those of lightnings. A method and definition of a measured value of impulse impedance are introduced. The impulse impedance was determined by a quotient of voltage drop on the tested earthing to a value of current in measure circuit. The usefulness of the impulse method for lightning protection evaluation is tested on radio base stations...

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• Local impedance imaging of boron-doped polycrystalline diamond thin films

  Publication

  • A. Zieliński
  • R. Bogdanowicz
  • J. Ryl
  • Ł. Burczyk
  • K. Darowicki

  - APPLIED PHYSICS LETTERS - Year 2014

  Local impedance imaging (LII) was used to visualise surficial deviations of AC impedances in polycrystalline boron-doped diamond (BDD). The BDD thin film electrodes were deposited onto the highly doped silicon substrates via microwave plasma-enhanced CVD. The studied boron dopant concentrations, controlled by the [B]/[C] ratio in plasma, ranged from 1 × 1016 to 2 × 1021 atoms cm−3. The BDD films displayed microcrystalline structure,...

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• Impedance Spectra of RC Model as a Result of Testing Pulse Excitation Measurement Method Dataset

  Publication

  • G. Lentka

  - Year 2022

  The dataset titled Impedance spectra of RC model as a result of testing pulse excitation measurement method contains the impedance spectrum of an exemplary test RC model obtained using pulse excitation. The dataset allows presentation of the accuracy of the impedance spectroscopy measuring instrument, which uses the pulse excitation method to shorten the time of the whole spectrum acquisition.

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• Corrosion rate measurements by non-linear electrochemical impedance spectroscopy

  Publication

  • K. Darowicki
  • K. Darowicki

  - CORROSION SCIENCE - Year 1995

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• Evaluation of pitting corrosion by means of dynamic electrochemical impedance spectroscopy

  Publication

  • K. Darowicki
  • S. Krakowiak
  • P. Ślepski
  • K. Darowicki

  - ELECTROCHIMICA ACTA - Year 2004

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• Evaluation of pitting corrosion by means of dynamic electrochemical impedance spectroscopy.

  Publication

  • K. Darowicki
  • S. Krakowiak
  • P. Ślepski

  - Year 2004

  Przeprowadzono badania stali stopowej 304L metodą dynamicznej elektrochemicznej spektroskopii impedancyjnej w warunkach liniowo zmieniającego się potencjału. Określono ogólny schemat układu elektrycznego dla elektrody ulegającej korozji. Przeprowadzone badania pozwalają na jednoczesne badanie zachowania się stali stopowej w stanie pasywnym, podczas stanu przejściowego (metastabilne tworzenie się i repasywacja wżerów) oraz w stanie...

• Evaluating and predicting the performance of organic coatings using impedance spectroscopy

  Publication

  • M. Szociński
  • A. Miszczyk

  - Physico-Chemical Mechanics of Materials - Year 2002

  Przedstawiono wyniki badań cyklicznych, sinusoidalnych zmian temperatury na powłokowe systemy ochronne o skrajnie różnych właściwościach antykorozyjnych. Porównano zachowanie nowej powłoki poliestrowej typu "coil-coating" na ocynkowanej stali uprzednio eksponowanej w warunkach atmosferycznych alkidowej powłoki malarskiej na podłożu stalowym. Badania przeprowadzono przy zastosowaniu techniki spektroskopii impedancyjnej. Stwierdzono...

• Dynamic electrochemical impedance spectroscopy of the first order electrode reaction

  Publication

  • K. Darowicki
  • P. Ślepski

  - JOURNAL OF ELECTROANALYTICAL CHEMISTRY - Year 2003

  Ciągłe transformaty STFT sinusoidalnego sygnału pobudzenia i odpowiedzi prądowej zostały wyznaczone dla reakcji elektrodowej pierwszego rzędu. Wyznaczono impedancję elektrody w łącznej dziedzinie czasu i częstotliwości. Wykonano pomiary dla reakcji redukcji Cd(II) na rtęciowej elektrodzie kroplowej w funkcji potencjału. Przedstawiono możliwość wyznaczenia chwilowych widm impedancyjnych. Opisano zależność rezystancji przeniesienia...

• Detection of the Plant Pathogen Pseudomonas Syringae pv. Lachrymans on Antibody-Modified Gold Electrodes by Electrochemical Impedance Spectroscopy

  Publication

  • Z. Cebula
  • S. Żołędowska
  • K. Dziąbowska
  • M. Skwarecka
  • N. Malinowska
  • W. Białobrzeska
  • E. Czaczyk
  • K. Siuzdak
  • M. Sawczak
  • R. Bogdanowicz
  • D. Nidzworski

  - SENSORS - Year 2019

  The present work describes an impedimetric immunosensor for Pseudomonas syringae pv. lachrymans (Psl) detection. This pathogen infects many crop species causing considerable yield losses, thus fast and cheap detection method is in high demand. In the assay, the gold disc electrode was modified with 4-aminothiophenol (4-ATP), glutaraldehyde (GA), and anti-Psl antibodies, and free-sites were blocked with bovine serum albumin (BSA)....

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• The Influence of Thin Gold Electrodes on the High-Temperature Impedance of Oxide Glasses

  Publication

  • N. A. Wójcik
  • R. J. Barczyński

  - Coatings - Year 2022

  The influence of thin gold electrodes on the electrical measurements of glasses at high temperatures was studied using impedance spectroscopy. The impedance was measured several times over a wide frequency range from 10 mHz to 1 MHz and the temperature ranged from 213 to 673 K under air and nitrogen atmospheres. The results showed a drop in the conductivity of more than an order of magnitude at a temperature around 603 K during...

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• Impedance Measurement and Selection of Electrochemical Equivalent Circuit of a Working PEM Fuel Cell Cathode

  Publication

  • K. Darowicki
  • Ł. Gaweł

  - Electrocatalysis - Year 2017

  The dynamic impedance analysis of direct methanolfuel cell (DMFC) cathode supplied with pure oxygen is pre-sented. Presented results were obtained during dynamic chang-es of the current density in working fuel cell. Investigation ofthe occurring processes at cathode was carried with dynamicelectrochemical impedance spectroscopy (DEIS). A discussionwas conducted based on the determined correlation parameterχ2. It was shown that...

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• Assessment of organic coating degradation via local impedance imaging

  Publication

  • K. Darowicki
  • M. Szociński
  • A. Zieliński

  - ELECTROCHIMICA ACTA - Year 2010

  The paper presents a new approach to organic coating condition evaluation at micrometer scale using localized impedance measurements. It is based on atomic force microscopy (AFM) in contact mode. Impedance is measured between conductive AFM tip and metal substrate covered with organic coating. A single-frequency voltage perturbation signal is applied between the electrodes and current response signal is registered. As the tip is...

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• Water uptake in protective organic coatings and its reflection in measured coating impedance

  Publication

  • A. Miszczyk
  • K. Darowicki

  - PROGRESS IN ORGANIC COATINGS - Year 2018

  Water uptake in commercially available epoxy coating on mild steel using impedance spectroscopy and gravimetry was studied. The water content in the coating was determined using the Brasher-Kingsbury equation and various methods of coating capacitance calculation used in the literature. The obtained results were compared with reference gravimetric data. An overestimation of values obtained from impedance data in relation to gravimetric...

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• Novel fast non-linear electrochemical impedance method for corrosion investigations

  Publication

  • P. Ślepski
  • M. Szociński
  • G. Lentka
  • K. Darowicki

  - MEASUREMENT - Year 2021

  The paper presents a novel approach to corrosion rate monitoring using non-linear electrochemical impedance spectroscopy. The authors propose a new variant of non-linear impedance measurement using amplitude-modulated multi-frequency ac perturbation signal. It allows shortening of measurement duration so it is possible to monitor corrosion rate of the systems experiencing rapid changes. In this way a limitation resulting from lack...

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• Scalable Measurement System for Multiple Impedance Gas Sensors

  Publication

  • G. Lentka

  - MAPAN-Journal of Metrology Society of India - Year 2017

  Author proposes scalable architecture of the measurement system for gas sensor with impedance dependance of the gas concentration. The main part of the system is a single-board impedance analyser. The number of analysers working in parallel can be configured according to specific application. The system is controlled by a single computer which organises the measurement cycle and store the acquired measurement data. The system is...

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• Localized impedance measurements of AA2024 and AA2024-T3 performed by means of AFM in contact mode

  Publication

  • A. Arutunow
  • A. Zieliński
  • M. Tobiszewski

  - ANTI-CORROSION METHODS AND MATERIALS - Year 2013

  Purpose: The purpose of this paper is to present the results of an atomic force microscopy (AFM) based approach to local impedance spectroscopy (LIS) measurement performed on AA2024 and AA2024-T3 aluminium alloys. Design/methodology/approach: AFM-LIS measurements were performed ex-situ without the electrolyte environment, so in fact the electrical not electrochemical impedance was obtained. Findings: Relative local impedance values...

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• Electrochemical properties of porous Sr0.86Ti0.65Fe0.35O3 oxygen electrodes in solid oxide cells: Impedance study of symmetrical electrodes

  Publication

  • A. Mroziński
  • S. Molin
  • J. Karczewski
  • T. Miruszewski
  • P. Jasiński

  - INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Year 2019

  This work evaluates porous Sr0.86Ti0.65Fe0.35O3 (STF35) as a possible oxygen electrode material for Solid Oxide Cells. The powder synthesis was performed by solid state method. Characterization included DC electrical conductivity study of sintered bulk samples and impedance spectroscopy study of symmetrical electrodes deposited on gadolinium doped ceria substrates. Measurements were carried out in atmospheres with different pO2...

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• Time evolution of Electrochemical Impedance spectra of cathodically protected steel in artificial seawater

  Publication

  • M. Narożny
  • K. Żakowski
  • K. Darowicki

  - CONSTRUCTION AND BUILDING MATERIALS - Year 2017

  Usability of Electrochemical Impedance Spectroscopy data for better cathodic protection control was investigated. Carbon steel – S235JR2 grade specimen were exposed in artificial seawater environment. Samples were polarized and their potentials corresponded to four different cathodic protection degrees. Time evolution of Electrochemical Impedance spectra was investigated. Goodness of fit function (X2) was analysed in terms of proper...

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• Investigations of the passive layer cracking by means of Dynamic Electrochemical Impedance Spectroscopy

  Publication

  • K. Darowicki
  • J. Orlikowski
  • A. Arutunow
  • K. Darowicki

  - ELECTROCHIMICA ACTA - Year 2003

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• Detection of stress corrosion cracking dynamics by dynamic electrochemical impedance spectroscopy

  Publication

  • K. Darowicki
  • J. Orlikowski
  • A. Arutunow
  • K. Darowicki

  - CORROSION ENGINEERING SCIENCE AND TECHNOLOGY - Year 2004

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• Determination of percolation threshold in cement composites with expanded graphite by impedance spectroscopy

  Publication

  • W. Pichór
  • M. Frąc
  • M. Radecka

  - CEMENT & CONCRETE COMPOSITES - Year 2022

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