EIS analysis of the electrochemical characteristics of the metal–water interface under the effect of temperature

Sun, Funan; Peng, Xiao; Bai, Xuejuan; Chen, Zhiwei; Xie, Ruizhen; He, Bin; Han, Pengju

doi:10.1039/d2ra01634f

Cited by 9 publications

(5 citation statements)

References 43 publications

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“…The three subprocesses can be separated and identified by calculating the effective capacitance, which agrees with the DRT analysis results (Figure ). C 1 represents the capacitance of the ion-exchange membranes intact with an aqueous electrolyte (10 –10 to 10 –9 F). , C 2 and C 3 exhibit charge transfer (10 –6 to 10 –1 F) and ion adsorption (typically 10 –1 to 10 1 F) capacitances, respectively, on the surface of the AC in the flow-electrode …”

Section: Resultsmentioning

confidence: 99%

Comprehensive Electrochemical Impedance Spectroscopy Study of Flow-Electrode Capacitive Deionization Cells

Kim

Park

Cho

et al. 2023

Environ. Sci. Technol.

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Flow-electrode capacitive deionization (FCDI) offers infinite ion adsorption for continuous desalination of high-concentration saline water by supplying a flow-electrode to the cell. Although extensive efforts have been made to maximize the desalination rate and efficiency of FCDI cells, the electrochemical properties of these cells are not fully understood. This study investigated the factors affecting the electrochemical properties of FCDI cells containing activated carbon (AC; 1–20 wt %) and various flow rates (6–24 mL/min) for the flow-electrode using electrochemical impedance spectroscopy before and after desalination. Examination of the impedance spectra using the distribution of relaxation time and equivalent circuit fitting analysis revealed three distinctive resistances such as internal, charge transfer, and ion adsorption resistances. The overall impedance decreased significantly after the desalination experiment due to increased ion concentrations in the flow-electrode. The three resistances decreased with increasing concentrations of AC in the flow-electrode due to the extension of electrically connected AC particles that participated in the electrochemical desalination reaction. The ion adsorption resistance decreased significantly due to the flow rate dependence of the impedance spectra. In contrast, the internal and charge transfer resistances were invariant.

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Section: Resultsmentioning

confidence: 99%

Comprehensive Electrochemical Impedance Spectroscopy Study of Flow-Electrode Capacitive Deionization Cells

Kim

Park

Cho

et al. 2023

Environ. Sci. Technol.

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“…The τ dl values were higher in the presence of PILs with the increasing C INH ( Table 4 ), revealing that the electric charge and discharge process occurring in the metal-solution interface is slower due to the presence of a higher number of macromolecules adsorbed on the metallic surface [ 46 , 48 ]. However, the number of these molecules falls with the increasing temperature, for it reduces the necessary time for their right orientation; as the temperature rises, the molecular thermal movement increases and τ dl goes on diminishing, which negatively affects the migration of PIL inhibiting species toward the metallic surface [ 49 ].…”

Section: Resultsmentioning

confidence: 99%

Temperature Effect on the Corrosion Inhibition of Carbon Steel by Polymeric Ionic Liquids in Acid Medium

Gómez-Sánchez

Olivares‐Xometl

Arellanes-Lozada

et al. 2023

IJMS

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In the present research work, the temperature effect on the corrosion inhibition process of API 5L X60 steel in 1 M H2SO4 by employing three vinylimidazolium poly(ionic liquid)s (PILs) was studied by means of electrochemical techniques, surface analysis and computational simulation. The results revealed that the maximal inhibition efficiency (75%) was achieved by Poly[VIMC4][Im] at 308 K and 175 ppm. The PILs showed Ecorr displacements with respect to the blank from −14 mV to −31 mV, which revealed the behavior of mixed-type corrosion inhibitors (CIs). The steel micrographs, in the presence and absence of PILs, showed less surface damage in the presence of PILs, thus confirming their inhibiting effect. The computational studies of the molecular orbitals and molecular electrostatic potential of the monomers suggested that the formation of a protecting film could be mainly due to the nitrogen and oxygen heteroatoms present in each structure.

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“…In the test of setup horizontal bed (a) we observed time changes in resistance and capacitance, but more strongly in resistance. This led us to hypothesis of escape of Cu + ions to electrolyte [5] that changes conductivity in time. This was expected, because we didn't use complete noble metal electrode [2], but only thin plated Cu+Au (<1um).…”

Section: Electrical Impedance Resultsmentioning

confidence: 99%

Nanotechnology for Distance Diagnostics

PROKŮPEK,

PASHCHENKO,

MARTINO

et al. 2023

NANOCON Conference Proeedings

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The notion of theragnostic brings together such terms as telemedicine, bionanosensors, and personalized medicine. Synergy in the mainstream areas can bring new approaches and provide a fresh perspective on long-established areas. The present research aims to prepare technological equipment for evaluating and measuring functionalized nanomembranes with analyte. Due to the functionalization of nanomaterials, it is possible to capture selectively the analyte or the targeted group. It can be, for example, viruses, bacteria, dangerous chemicals, body fluids, or miRNA. Electronic and optical methods have been preselected for the biomarkers binding evaluation. Methods were selected as technically and scientifically proven. Optical methods have a leading place in "in vitro" diagnostics. In the long-term horizon, it can be used as a Nano Chip biosensor (Including Nano Receptor, Nano Biosensor, and microelectronics).

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EIS analysis of the electrochemical characteristics of the metal–water interface under the effect of temperature

Abstract: The mathematical model of impedance response and the equivalent circuit model is determined based on electrochemical kinetics theory, and a method for calculating the kinetic parameters of the metal interface is presented.

Cited by 9 publications

References 43 publications

Comprehensive Electrochemical Impedance Spectroscopy Study of Flow-Electrode Capacitive Deionization Cells

Comprehensive Electrochemical Impedance Spectroscopy Study of Flow-Electrode Capacitive Deionization Cells

Temperature Effect on the Corrosion Inhibition of Carbon Steel by Polymeric Ionic Liquids in Acid Medium

Nanotechnology for Distance Diagnostics

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