Influence of surfactant polarity on the evolution of micro-texture, grain boundary constitution and corrosion behavior of electrodeposited Zn coatings

Jyotheender, K. Sai; Kumar, Mohan; Srivastava, Chandan

doi:10.1016/j.surfcoat.2021.127594

Cited by 14 publications

(2 citation statements)

References 29 publications

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“…Furthermore, these coating primers can undergo modifications, such as anodization [7, 8, 16] or additional sealing [17,18]. The potential utilization of these Zn layers in alternative energy components [16][17][18][19][20][21][22] and potential biomedical applications [23] continues to drive increasing interest in this type of coatings. The formation mechanism and characteristics of galvanic layers are significantly influenced by additives in the electrodeposition electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical assessment of the barrier ability of galvanic Zn coating primers electrodeposited on low-carbon steel

Girginov,

Kozhukharov,

Boshkova

2024

J. Phys.: Conf. Ser.

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Low-carbon steel is highly susceptible to corrosion, necessitating protective coatings capable of efficiently shielding its surface from corrosive environments. This brief research focuses on evaluating the protective capacity of electrochemically deposited Zn coatings, both with and without the addition of benzalacetone. Two independent electrochemical methods, Electrochemical Impedance Spectroscopy (EIS) and Potentiodynamic Scanning (PDS), were employed after exposing the samples to a 0.01 M NaCl model corrosive medium (MCM) for 24 hours. The results demonstrate the discernible barrier performance of the Zn protective films compared to the bare steel substrates.

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Section: Introductionmentioning

confidence: 99%

Electrochemical assessment of the barrier ability of galvanic Zn coating primers electrodeposited on low-carbon steel

Girginov,

Kozhukharov,

Boshkova

2024

J. Phys.: Conf. Ser.

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“…Besides, the optimization of the electrodeposition of Zn-based layers still remains a topic of intensive research [6,7]. In this sense, the main approaches for this optimization are through enhancement of the electrolyte composition [8][9][10] or by applying different electrodeposition regimes [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Impact of the final thermal sealing of combined zinc/cerium oxide protective coating primers formed on low carbon steel

Kozhukharov

Girginov

Boshkova

et al. 2022

J. Electrochem. Sci. Eng.

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The final sealing possesses a proven beneficial effect on the protective properties of anodic oxide films on aluminum. In this sense, the present research is devoted to the evaluation of the impact of this procedure on the barrier ability of combined Zn/Ce oxide layers deposited on low carbon steel samples. For this purpose, four samples were submitted to galvanic zinc deposition, followed by spontaneous formation of cerium oxide primer layer (CeOPL). Afterwards, two of the samples underwent thermal sealing in boiling water in order to enhance their barrier ability. Its evaluation was performed by two electrochemical methods: electrochemical impedance spectroscopy (EIS) and potentiodynamic scanning (PDS) after 24 hours of exposure to a diluted model corrosive medium (MCM). Other instrumental methods were used in order to describe the effect of this final procedure on the color characteristics and hydrophobicity of the films. The results were collected from multiple tests, followed by statistical data treatment. In addition, the surfaces of the obtained films were submitted to direct observation by scanning electron microscopy (SEM), coupled with energy dispersion X-ray (EDX). Their composition was determined by means of X-ray Photoelectron Spectroscopy (XPS). The acquired data have revealed a detrimental effect of the final sealing in boiling water. It was expressed by the loss of the barrier properties of the Zn/CeOPL films, combined with additional decolorization and hydrophilization. Finally, the mechanism of this detrimental effect was determined by further SEM, EDX and XPS analyses.

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Anti‐Corrosion for Reversible Zinc Anode via a Hydrophobic Interface in Aqueous Zinc Batteries

Guan

Yang

et al. 2022

Advanced Energy Materials

156

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Water corrosion and dendrite growth seriously break the zinc plating/stripping process at the electrolyte/anode interface, causing the instability of the zinc metal anode of aqueous zinc batteries. Herein, a self‐consistent hydrophobic interface and orderly channels are assembled by three quaternary ammonium cationic surfactants, which can block the water erosion. Of particular interest, experimental results combined with theoretical calculation (DFT) reveals that the hydrophobic groups in quaternary ammonium cations are the determinaning factor in the kinetic process of zinc ion deposition and the life of the zinc anode. The massive micelles formed by benzyldimethyldodecylammonium with dodecyl and benzyl groups cause great hindrance to the transport and deposition of zinc ions. And dodecyltrimethylammonium with only a main hydrophobic group of dodecyl results in the higher polarization overpotential or voltage hysteresis for the zinc plating and lower coulombic efficiency (CE) < 99%. Surprisingly, the hydrophobic interface assembled by benzyltrimethylammonium (TMBA+) with a main benzyl group can inhibit side reactions and regulate zinc uniform deposition. And the batteries based on TMBA+ can achieve superb cycle stability with low voltage hysteresis and almost 100% CE. The proposed hydrophobic interface formed by quaternary ammonium cationic surfactants establishes pioneering work on zinc anode stability for zinc batteries and beyond.

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Influence of surfactant polarity on the evolution of micro-texture, grain boundary constitution and corrosion behavior of electrodeposited Zn coatings

Cited by 14 publications

References 29 publications

Electrochemical assessment of the barrier ability of galvanic Zn coating primers electrodeposited on low-carbon steel

Electrochemical assessment of the barrier ability of galvanic Zn coating primers electrodeposited on low-carbon steel

Impact of the final thermal sealing of combined zinc/cerium oxide protective coating primers formed on low carbon steel

Anti‐Corrosion for Reversible Zinc Anode via a Hydrophobic Interface in Aqueous Zinc Batteries

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