In this study the effect of crystallite size reduction and microstructure on the electrochemical corrosion behavior of nanocrystalline nickel (NC Ni) were investigated using Tafel polarization and electrochemical impedance spectroscopy (EIS) measurements in 10 wt.% NaOH. NC Ni coatings were produced by direct current electrodeposition using chloride baths in presence and absence of saccharin as...

The influence of carbon monoxide poisoning on the platinum and platinum /ruthenium anode in a polymer electrolyte fuel cell was investigated using electrochemical impedance spectroscopy (EIS). EIS is a very useful method for the characterisation of fuel cells. Therefore, impedance measurements of the cell under constant load were performed at periodic time intervals. Due to the poisoning effect...

a r t i c l e i n f o The oxygen exchange and diffusion properties of La 0.6 Sr 0.4 CoO 3 − δ thin films on yttria stabilized zirconia were analyzed by impedance spectroscopy and 18 O tracer experiments. The investigations were performed on the same thin film samples and at the same temperature (400 °C) in order to get complementary information by the two methods. Electrochemical impedance spec...

The aim of this study is to elaborate a simple and sensitive electrochemical immunoassay using ferrocenecarboxylic (Fc-COOH)-doped silica nanoparticles (SNPs) as an immobilized affinity support for cancer antigen 15-3 (CA 15-3) detection. The Fc-COOH-doped SNPs with redox-active were prepared by using a water-in-oil microemulsion method. The use of colloidal silica could prevent the leakage of ...

Electrochemical impedance spectroscopy (EIS) is a versatile technique to characterize electrochemical systems satisfying causality, linearity and stationarity requirements. Odd Random Phase multisine EIS (ORP-EIS) can measure time-varying impedances for non-stationary processes. In this work, operando ORP-EIS introduced monitor the anodizing of aluminum, which nonlinear process, by superimposin...

Abstract Electrochemical impedance spectroscopy (EIS) was applied to a set of microsamples Apulian red‐figured pottery coming from the archaeological sites Altamura, Arpi, Conversano, Monte Sannace, Taranto, and Pella. EIS data using Fe (CN) 6 3− /Fe 4− as redox probe yields information on roughness, porosity, shape, size distribution inclusions in clay body. Impedance parameters after equivale...

This paper deals with the problem of estimating the state of charge (SOC) of lithium-ion batteries. Based on the analysis of the impedance spectra obtained by electrochemical impedance spectroscopy (EIS), a simplified battery impedance model is derived with the constant phase element (CPE). To interpret the impedance model, a fractional order calculus (FOC) method is introduced to model the CPE...

Y1.86Eu0.14WO6 phosphors were prepared using a solid-state reaction method. Their optical properties were analysed, and they was mixed with TiO2, sintered, and used as a photoelectrode (PE) in dye-sensitized solar cells (DSSCs). The as-prepared photoelectrode was characterized by photoluminescence spectroscopy, diffuse reflectance, electrochemical impedance spectroscopy (EIS) and X-ray diffract...

The corrosion behavior of oxygen-free copper in anoxic sulfide solutions under nuclear waste disposal conditions was studied using electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) equipped with a focused ion beam (FIB), X-ray photoelectron spectroscopy (XPS) and Micro X-ray diffraction ( XRD). The film growth process and mechanism were elucidated using an Au mark...

we study copper corrosion inhibition by ethanolamine (eta)with (0, 0.2 ,0.3,0.4,0.5) vol.% concentrations in 100 ppm nacl solution. this work is carried out by potentiodynamic measurements and electrochemical impedance spectroscopy (eis). the substrates' surface morphologies are examined by scanning electron microscopy (sem). etais characterized by nmr spectra of eta1h and 13c and fourier ...