The effect of NaCl concentration on the ionic NaCl solutions electrical impedance value using electrochemical impedance spectroscopy methods

Widodo, Chomsin S.; Sela, Herenda; Santosa, Didik Rahadi

doi:10.1063/1.5062753

Cited by 39 publications

(25 citation statements)

References 4 publications

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“…Furthermore, the activation energy barrier during the corrosion reaction decreases when the salt concentration increases, implying that corrosion is thermodynamically favored in the concentrated media and thus confirming that the corrosion kinetics follow the Arrhenius law 115 . Widodo 117 added that it can be related to the conductivity of the solution, where a high conductivity of NaCl effectively increased the concentration of chloride ions, which in turn provided less resistivity for ion propagation in the solution that leads to the increased rate of oxidation of the metal. This finding can be explained by Arrhenius theory, which states that the ionic conductivity of an electrolyte solution is determined by its electrolyte ions.…”

Section: Physical Properties Of Nacl As Mafc Electrolyte Influencing Corrosion Behaviormentioning

confidence: 58%

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Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

et al. 2021

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Summary This study aimed to provide a critical review of the magnesium‐air fuel cell (MAFC) system to provide readers with an overall comprehension of MAFC, which focuses on the modification of the magnesium anode and properties of saltwater as an electrolyte. Although MAFC is benign to the environment, it is well‐known for its challenging corrosion issue and by‐product deposition that affect its durability for commercialization and long‐term application. Since that MAFC is able to use seawater as electrolyte, it has great potential to be used as an alternative energy option for the marine sector. This journal will dissect the ability of MAFC to be used as a competitive alternative energy. Over the years, researchers have adopted several approaches, such as experimenting with different types of magnesium alloy and anode fabrication techniques, to tackle corrosion problems to alter the microstructure and mechanical properties of the anode in addition to applying a coating protection and using Mg‐based composite material. Furthermore, studies intriguingly and gradually focused on electrolyte formulation with different types of additives to address the debilitating precipitation issue and improve the discharge performance. Given the problems that arise in the system, currently, MAFC commercial products are only suitable as emergency back‐up power. In future work, an improved storage system for MAFC should be built to accommodate the precipitation products while maintaining the desired cell performance.

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Section: Physical Properties Of Nacl As Mafc Electrolyte Influencing Corrosion Behaviormentioning

confidence: 58%

“…The conductivity of a medium illustrates its capability to carry electricity. Thus, if high amounts of sodium and chloride ions are present in a solution, then electricity is easily transferred, thus giving the liquid a high conductivity property 117 …”

Section: Physical Properties Of Nacl As Mafc Electrolyte Influencing Corrosion Behaviormentioning

confidence: 99%

Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

et al. 2021

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“…It is worth noting that the conductivity of these biohydrogels is comparable to those reported for PVA-containing hydrogels; for instance, PVA doped with H 3 PO 4 or H 2 SO 4 (11.6 or 7.1 mS/cm, respectively), [ 41 , 42 ] PVA doped with H 3 PO 4 and 2-mercaptopyridine (22.6 mS/cm), [ 41 ] PVA doped with H 2 SO 4 and indigo carmine or alizarin red S (20.3 or 33.1 mS/cm, respectively), [ 43 ] chemically crosslinked PVA-poly(ethylene glycol) (67.1 mS/cm) [ 44 ] and KCl doped boron cross-linked PVA (38 mS/cm). [ 45 ] Moreover, the ionic conductivity of a 0.1 M NaCl aqueous solution is ~20 mS/cm, a concentration of 1 M NaCl being required to obtain a value comparable to that of doped PEA hydrogel [ 46 ]. This feature evidences the important role of the hydrogel structure in the mobility of ions.…”

Section: Resultsmentioning

confidence: 99%

Electrical and Capacitive Response of Hydrogel Solid-Like Electrolytes for Supercapacitors

et al. 2021

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Flexible hydrogels are attracting significant interest as solid-like electrolytes for energy storage devices, especially for supercapacitors, because of their lightweight and anti-deformation features. Here, we present a comparative study of four ionic conductive hydrogels derived from biopolymers and doped with 0.1 M NaCl. More specifically, such hydrogels are constituted by κ-carrageenan (κC), carboxymethyl cellulose (CMC), poly-γ-glutamic acid (PGGA) or a phenylalanine-containing polyesteramide (PEA). After examining the morphology and the swelling ratio of the four hydrogels, which varies between 483% and 2356%, their electrical and capacitive behaviors were examined using electrochemical impedance spectroscopy. Measurements were conducted on devices where a hydrogel film was sandwiched between two identical poly(3,4-ethylenedioxythiophene) electrodes. The bulk conductivity of the prepared doped hydrogels is 76, 48, 36 and 34 mS/cm for PEA, PGGA, κC and CMC, respectively. Overall, the polyesteramide hydrogel exhibits the most adequate properties (i.e., low electrical resistance and high capacitance) to be used as semi-solid electrolyte for supercapacitors, which has been attributed to its distinctive structure based on the homogeneous and abundant distribution of both micro- and nanopores. Indeed, the morphology of the polyestermide hydrogel reduces the hydrogel resistance, enhances the transport of ions, and results in a better interfacial contact between the electrodes and solid electrolyte. The correlation between the supercapacitor performance and the hydrogel porous morphology is presented as an important design feature for the next generation of light and flexible energy storage devices for wearable electronics.

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“…S3 (A and B) was wrapped around a tubing (∅800 μm) to show the in-plane resolution in hybrid oil/water coupling RThAM. The suture phantom was soaked in 10% w/v NaCl solution [1.71 M, ~28.86 S/m according to Widodo et al ( 55 )] for 2 hours and placed wet in an open transmission line.…”

Section: Methodsmentioning

confidence: 99%

Noninvasive visualization of electrical conductivity in tissues at the micrometer scale

et al. 2021

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Despite its importance in regulating cellular or tissue function, electrical conductivity can only be visualized in tissue indirectly as voltage potentials using fluorescent techniques, or directly with radio waves. These either requires invasive procedures like genetic modification or suffers from limited resolution. Here, we introduce radio-frequency thermoacoustic mesoscopy (RThAM) for the noninvasive imaging of conductivity by exploiting the direct absorption of near-field ultrashort radio-frequency pulses to stimulate the emission of broadband ultrasound waves. Detection of ultrasound rather than radio waves enables micrometer-scale resolutions, over several millimeters of tissue depth. We confirm an imaging resolution of <30 μm in phantoms and demonstrate microscopic imaging of conductivity correlating to physical structures in 1- and 512-cell zebrafish embryos, as well as larvae. These results support RThAM as a promising method for high-resolution, label-free assessment of conductivity in tissues.

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The effect of NaCl concentration on the ionic NaCl solutions electrical impedance value using electrochemical impedance spectroscopy methods

Cited by 39 publications

References 4 publications

Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

Critical review on development of magnesium alloy as anode inMg‐Airfuel cell and additives in electrolyte

Electrical and Capacitive Response of Hydrogel Solid-Like Electrolytes for Supercapacitors

Noninvasive visualization of electrical conductivity in tissues at the micrometer scale

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