Effects of sulfate and nitrate anions on aluminum corrosion in slightly alkaline solution

Li, Shengyi; Church, Benjamin C.

doi:10.1016/j.apsusc.2018.01.108

Cited by 20 publications

(10 citation statements)

References 36 publications

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“…Non‐chloride electrolytes have also been reported for Al‐ion batteries, including aluminum bis(trifluoromethanesulfonyl)imide, which exhibits a voltage window of 3.6 V (in acetonitrile solvent) and aluminum trifluoromethanesulfonate, which exhibits a voltage window of 3.5 V (in N ‐methylacetamide/urea) . The use of sulfate‐based electrolytes creates pitting corrosion on Al metal, whereas the use of nitrate‐based electrolytes protects Al metal, albeit at the expense of ion‐selective transport . Fluoride ions are reported to induce uniform corrosion of aluminum in sulfuric acid, whereas the electrochemical stability windows of AlCl 3 /[BMIM]X (X is a halide) narrow according to the progression X=Cl − (5.5 V)>Br − (5.1 V)>I − (4.7 V) …”

Section: Trends In Enabling Aqueous Electrolytes For Multivalent‐ion mentioning

confidence: 99%

“…[107] The use of sulfate-based electrolytes creates pitting corrosion on Al metal, whereas the use of nitrate-based electrolytesprotects Al metal, albeit at the expense of ion-selective transport. [108] Fluoride ions are reported to induce uniform corrosion of aluminumi ns ulfuric acid, [109] whereas the electrochemicals tability windows of AlCl 3 /[BMIM]X (X is ah alide) narrow according to the progression X = Cl À (5.5 V) > Br À (5.1 V) > I À (4.7 V). [110]…”

Section: Aluminum Ionsmentioning

confidence: 99%

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Water in Rechargeable Multivalent‐Ion Batteries: An Electrochemical Pandora's Box

et al. 2019

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Multivalent‐ion batteries built on water‐based electrolytes represent energy storage at suitable price points, competitive performance, and enhanced safety. However, to comply with modern energy‐density requirements, the battery must be reversible within an operating voltage window greater than 1.23 V or the electrochemical stability limits of free water. Taking advantage of its powerful solvation and catalytic activities, adding water to electrolyte preparations can unlock a wider gamut of liquid mixtures compared with strictly nonaqueous systems. However, a point‐by‐point sweep of all potential formulations is arduous and ineffective without some form of systematic rationalization. The present Review consolidates recent progress, pitfalls, limits, and insights critical to expediting aqueous electrolyte designs to boost multivalent‐ion battery outputs.

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Section: Trends In Enabling Aqueous Electrolytes For Multivalent‐ion mentioning

confidence: 99%

Section: Aluminum Ionsmentioning

confidence: 99%

Water in Rechargeable Multivalent‐Ion Batteries: An Electrochemical Pandora's Box

et al. 2019

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“…By contrast, dramatic diminishments of low and high frequency loops are observed in both pH 2 and 11 cases, suggesting the weak protection of the oxides grown on electrode surface. This reflects the amphoteric nature of aluminum that it can be readily dissolved either in highly acidic or highly alkaline environments [31][32][33].…”

Section: Electrochemical Impedance Spectroscopy Measurementsmentioning

confidence: 99%

“…Literature survey [37][38][39][40] shows that phosphates can make strong bonds with Al surface and positively influence the corrosion property of oxide film mainly through two ways; formation of an adsorption layer at oxide/PCM interface, thus preventing the penetration of aggressive anions; incorporation into the Al oxide film in the form of aluminum phosphates, healing the surface film by plugging the defects. Another main PCM specie, SO 4 2− ions, also show potential to participate in the competitive adsorption at oxide/PCM interface and promote the growth of oxides by chemical adsorption [33]. The formation of aluminum sulfate is possibly favored in alkaline medium [33].…”

Section: Electrochemical Impedance Spectroscopy Measurementsmentioning

confidence: 99%

“…Another main PCM specie, SO 4 2− ions, also show potential to participate in the competitive adsorption at oxide/PCM interface and promote the growth of oxides by chemical adsorption [33]. The formation of aluminum sulfate is possibly favored in alkaline medium [33]. Bedsides, aluminum hydroxides can also be formed at Al/PCM interface under continuous attack of OH − ions.…”

Section: Electrochemical Impedance Spectroscopy Measurementsmentioning

confidence: 99%

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Corrosion behavior of aluminum in molten hydrated salt phase change materials for thermal energy storage

Zhao

Munis

Rehman

et al. 2020

Mater. Res. Express

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The corrosion behavior of aluminum 1060 in hydrated salt phase change materials (PCM) melts comprised of Na 2 HPO 4 ·12H 2 O -Na 2 SO 4 ·10H 2 O was investigated through electrochemical tests as a function of pH. The pH of PCM medium was adjusted by adding H 2 SO 4 or NaOH. Electrochemical impedance spectroscopy reveals the existence of concentration difference layer at aluminum/PCM interface ascribed to the adsorption of PCM species and the formation of aluminum oxides. The observed anodic branch of DC polarization exhibits potential independence which is ascribed to the formation of surface oxide film and the accumulation of hydrogen molecules inside surface pores. The oxide film formed at neutral condition is characterized as the most compact and corrosion resistant while as the environmental pH shifts away from 7 the oxides/aluminum dissolution is accelerated and more aluminum 1060 substrate is exposed. − (HPO 4 2− +H 2 O⇌H 2 PO 4 − +OH − ). However, the favorable properties of aluminum, i.e., low density, high thermal conductivity and good formability, has enabled it as a more attractive candidate container material than OPEN ACCESS

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An evaluation of Acacia mearnsii tannin as an aluminum corrosion inhibitor in acid, alkaline, and neutral media

Rodrigues

Dalmoro

Santos

2020

Materials & Corrosion

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The electrochemical behavior of aluminum in tannin from Acacia mearnsii bark was evaluated by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) in media under three different pH conditions: acid, alkaline, and neutral. A relationship among pH, polymerization grade (PG), zeta potential, surface, and electrochemical properties was observed in the inhibition performance of the tannin. At high pH, the oligomer structure of the tannin was affected, resulting in a low PG (4) and high zeta potential (−75 mV), and consequently, the inhibition efficiency decreased (68%) in comparison with that in acid (99%) and neutral media (96%). The values obtained indicate a physisorption mechanism for the aluminum corrosion inhibition in the studied conditions.

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Effects of sulfate and nitrate anions on aluminum corrosion in slightly alkaline solution

Cited by 20 publications

References 36 publications

Water in Rechargeable Multivalent‐Ion Batteries: An Electrochemical Pandora's Box

Water in Rechargeable Multivalent‐Ion Batteries: An Electrochemical Pandora's Box

Corrosion behavior of aluminum in molten hydrated salt phase change materials for thermal energy storage

An evaluation of Acacia mearnsii tannin as an aluminum corrosion inhibitor in acid, alkaline, and neutral media

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