Abstract:The combined use of indium and polysorbate 20 (Tween 20) was considered as a new inhibition technique for zinc corrosion. Zn and Zn-In alloy coatings were prepared by electrodeposition and their morphology and composition were characterized by scanning electron microscopy (SEM) and inductively coupled plasma atomic emission spectrometry (ICP-AES). The corrosion inhibition effect of indium and Tween 20 on zinc was investigated by polarization curves and electrochemical impedance spectroscopy (EIS). The corrosio… Show more
“…1 shows the IR spectra for SSL, Tween 20 and κ-carrageenan. Table 2 shows their characteristic absorption bands, allocated according to available sources [1] , [2] , [3] , [4] , [5] . Fig.…”
Section: Experimental Design Materials and Methodsmentioning
Surfactant-polymer mixtures are common in food, cosmetic and pharmaceutical products. These components can interact with each other. The interactions depend on the type of polymer and surfactant, the purity of the ingredients, the ionic content and their concentration. Therefore, the data presented here provide valuable information that could be useful for those working with these mixtures in different applications, particularly in blends with polyelectrolytes and their counterions. This article contains experimental data about the physicochemical characterization of sodium stearoyl lactylate (SSL), polyoxyethylene sorbitan monolaurate (Tween 20) and κ-carrageenan. Techniques included atomic absorption, DSC, FTIR-ATR, NMR, and surface tension.
“…1 shows the IR spectra for SSL, Tween 20 and κ-carrageenan. Table 2 shows their characteristic absorption bands, allocated according to available sources [1] , [2] , [3] , [4] , [5] . Fig.…”
Section: Experimental Design Materials and Methodsmentioning
Surfactant-polymer mixtures are common in food, cosmetic and pharmaceutical products. These components can interact with each other. The interactions depend on the type of polymer and surfactant, the purity of the ingredients, the ionic content and their concentration. Therefore, the data presented here provide valuable information that could be useful for those working with these mixtures in different applications, particularly in blends with polyelectrolytes and their counterions. This article contains experimental data about the physicochemical characterization of sodium stearoyl lactylate (SSL), polyoxyethylene sorbitan monolaurate (Tween 20) and κ-carrageenan. Techniques included atomic absorption, DSC, FTIR-ATR, NMR, and surface tension.
“…[38] Indium is known to hinder the hydrogen evolution reaction when this metal is present on the negative electrode surface. [39][40][41][42] Indium is non-toxic and environmentally friendly, although expensive. Therefore, the indium content in the electrode formulation must be minimized in order to stick with the requirements of feasible ZIBs prototypes.…”
Section: Introductionmentioning
confidence: 99%
“…In particular, our group has recently developed an optimized powder electrode consisting of bismuth and indium particles acting as a substrate for achieving an efficient electrodeposition of zinc from diluted electrolytes [38] . Indium is known to hinder the hydrogen evolution reaction when this metal is present on the negative electrode surface [39–42] . Indium is non‐toxic and environmentally friendly, although expensive.…”
Increasing the electrodeposition efficiency of metallic zinc from quasi‐neutral aqueous electrolytes is one of the major key requirements for the commercialization of rechargeable aqueous Zn‐ion batteries. Several strategies have been recently reported in the literature. Unfortunately, electrochemical studies on the effect of different current densities on the zinc electrodeposition efficiency usually are not recorded in realistic experimental conditions: e. g. depth of discharges <1–10 %, use of negative electrodes with infinite reservoir of Zn2+, etc. Here, the effect of the current density on the zinc electrodeposition onto optimized bismuth‐indium substrates cycled with 33 % of depth of discharge in a ZnSO4‐containing aqueous solution has been investigated. It was found that low Zn plating/stripping current densities displayed higher electrodeposition efficiencies over 200 Zn electrodeposition/dissolution cycles, more homogeneous distribution of the zinc deposits and lower amounts of inactive zinc passivation products. When higher current densities were applied during the Zn plating/stripping cycles, lower electrodeposition efficiencies and a greater amount of inactive zinc hydroxides and dead zinc were observed on the electrode surface.
“…Recently, some organic agents have been added to the electrolyte to deposit a flat Zn‐based film composed of smaller grains . Organic additives also can influence the electrochemical behavior during electrodeposition, such as the grain size, chemical composition, and anticorrosion . For instance, de Almeida et al reported electrodeposited Cu–Zn alloys on steel using alkaline electrolytes with various concentrations of ethylenediaminetetraacetic acid (EDTA) .…”
Section: Introductionmentioning
confidence: 99%
“…They found that the grain size of the Zn alloy decreased with increasing EDTA concentration in the electrolyte . Li reported that polysorbate 20 (Tween 20) could inhibit Zn corrosion in a KOH solution . Torrent‐Burgues reported the electrodepostion of Zn using tartaric acid .…”
In this study, we report the electrochemical and corrosion behaviors of Zn anodes in electrolytes (6.0 M KOH) with various additives, such as ethylenediaminetetraacetic acid (EDTA), polysorbate 20 (Tween 20), and tartaric acid. Data are given as Tafel plots, linear polarizations, cyclic voltammetry measurements, and charge–discharge test results. After the 1000th cycle of charge–discharge measurements, the morphologies of the Zn anodes in electrolytes with various additives were examined by scanning electron microscopy (SEM). The results of linear polarization show that the corrosion resistance was in the order EDTA > Tween 20 > tartaric acid > blank. Based on the SEM images, the prevention of dendrite formation followed the order EDTA > Tween 20 = tartaric acid > blank.
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