Electrochemical behavior of Mg–Li, Mg–Li–Al and Mg–Li–Al–Ce in sodium chloride solution

Cao, Dianxue; Wu, Lin; Sun, Youyi; Lv, Yanzhuo

doi:10.1016/j.jpowsour.2007.11.037

Cited by 131 publications

(51 citation statements)

References 25 publications

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“…Furthermore, there are some cracks on the surface of AZ91 anodes in all solutions which allow an effective contact of magnesium matrix with electrolyte to ensure a continuous discharge of Mg-air batteries. 8,30 Therefore, the discharge performance of Mg-air battery is closely related to the crack density on the anode surface. It is clear that the crack density on the anode surface in solution A is lower than in other solutions.…”

Section: Different Solutionsmentioning

confidence: 99%

Investigation of Sodium Phosphate and Sodium Dodecylbenzenesulfonate as Electrolyte Additives for AZ91 Magnesium-Air Battery

Wang

et al. 2018

J. Electrochem. Soc.

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This paper reports on the improvement of discharge performances of magnesium-air batteries by adding sodium phosphate and sodium dodecylbenzenesulfonate to sodium chloride aqueous solution. Four different electrolytes are tested. Results obtained show that the discharge potential and anode utilization of magnesium-air battery increase significantly with addition of the additives. With an electrolyte of 3.5 wt% sodium chloride+0.5 g · L −1 sodium phosphate, the discharge potential increases from 1.120 V to 1.150 V and the anode utilization increases from 44.1% to 49.1%. The self-corrosion rate of anode has a tendency to decrease with addition of the additives. In solution of 3.5 wt% sodium chloride+0.5 g · L −1 sodium dodecylbenzenesulfonate +0.5g · L −1 sodium phosphate, the self-corrosion is low and the inhibition efficiency can reach 95.2%. Magnesium-air (Mg-air) battery plays an increasingly significant role in power source energy and storage devices.1,2 There are lots of advantages of Mg-air battery, such as high theoretical potential (3.09 V), high specific energy density (6.8 kWh · kg −1 ), neutral electrolyte, environmental friendliness, and low cost. 3-5Although Mg-air battery has a promising future, there are still some problems remarkably limiting its development and delaying its application in daily life. One of the major problems is anodic polarization during battery discharge. [6][7][8] As the total reaction of Mgair battery (Eq. 1) shows:The discharge product is magnesium hydroxide which has a tendency to attach to the surface of anode. It can reduce the reactionsurface area leading to a decrease of discharge potential when battery discharges in a constant-current mode. As we all know, the potential of Mg is −2.37 V (vs · SHE) and it can react spontaneously with aqueous solution according to the following equation:This wasteful self-corrosion leads to low utilization efficiency during discharge process. 9,10 There are numerous efforts to reduce selfcorrosion of magnesium, focusing either on how to improve anode behaviors [11][12][13] or how to optimize electrolyte composition. 14,15 Compared to studies for anode improvement, there are few studies aimed at electrolyte optimization. Furthermore, adding additives to the electrolyte is known to be a convenient and effective method. For example, the self-discharge capacity is significantly increased by adding water soluble graphene to NaCl solution.14 Jing et al. 15 found that when NaF and Na 3 PO 4 were used as additives to electrolyte Mg-MnO 2 cell demonstrated an excellent discharge performance. And sodium dodecylbenzenesulfonate (SDBS) as a good organic inhibitor can work together with the Na 2 SiO 3 on the AZ31 magnesium alloy in 1% NaCl. 16Although electrolyte is one of the most crucial factors, additive research is few comparing the anode materials. Up to now, Mg-air batteries with Na 3 PO 4 and SDBS as additives have never been studied. It is known that sodium chloride aqueous solution (3.5% NaCl) is the most suitable electrolyte for Mg-air batt...

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Section: Different Solutionsmentioning

confidence: 99%

Investigation of Sodium Phosphate and Sodium Dodecylbenzenesulfonate as Electrolyte Additives for AZ91 Magnesium-Air Battery

Wang

et al. 2018

J. Electrochem. Soc.

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“…The reason for this difference may be the fact, that research was carried out in different solution. Difference may be also related to some passivation of the surface resulting from the presence in physiological solution environment saline sodium citrate MPF [20] and sodium acetate. As it is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Corrosion of Biocompatible Mg66+xZn30-xCa4 (x=0.2) Bulk Metallic Glasses

Nowosielski

Cesarz-Andraczke

Sakiewicz

et al. 2016

Archives of Metallurgy and Materials

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The aim of this paper was to investigate the corrosion resistance of Mg66Zn30Ca4 and Mg68Zn28Ca4 metallic glasses and evaluate the ability of this amorphous alloy use for medical applications as biodegradable medical implants. Taking into account the amount of Mg, Zn, Ca elements dissolved in multielectrolyte physiological fluid (MPF) from Mg66+xZn30-xCa4 (x=0.2) alloys the daily dose of evolved ions from alloys components was determined. Additional goal of the paper was determination of corrosion rate (Vcorr) and amount of hydrogen evolved from amorphous magnesium alloys in simulated environment of human body fluids during 24h immersion and during electrochemical tests. Corrosion studies were done in the multielectrolyte physiological fluid (MPF) at 37°C. The amount of hydrogen evolved [ml/cm2] and corrosion rate Vcorr [mm/year] of amorphous Mg66Zn30Ca4 and Mg68Zn28Ca4 alloys were compared. The work also presents characterization of Mg-based bulk metallic glasses structure in the form of 2 mm thickness plates. Samples structure was analyzed by means of X-ray diffraction. Fracture and surface morphology of magnesium alloy samples were identified using scanning electron microscopy.

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“…Details of the procedure can be found in ref. [31,32]. In brief, ingots of the pure elements were charged into an induction furnace and melted under the protection of ultrahigh purity argon.…”

Section: Methodsmentioning

confidence: 99%

“…[32] The Mg-Li alloy sheets were then electrooxidised by applying a constant potential of À1.0 V (vs. SCE) in 0.7 mol dm À3 NaCl solution for 1 h. A layer of black mud was formed on the metal surface. After the removal of the surface products, the pristine shiny smooth metal surface became black and rough.…”

Section: Methodsmentioning

confidence: 99%

Self-growth of micro- and nano-structured Mg(OH)₂on electrochemically anodised Mg–Li alloy surface

Wang

Cao

et al. 2013

Journal of Experimental Nanoscience

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Formation of Mg(OH) 2 nanowires and their assemblies with sphere-shaped, echinus-shaped and nest-like micro-structures on a Mg-Li alloy surface was successfully demonstrated. Mg(OH) 2 nanowires were formed on the alloy surface via a self-growth process, after the alloy was electrooxidised in NaCl solution and the oxidation products were removed. The nanowires were characterised by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Infrared spectroscopy. The nanowires have hexagonal rod-like or brush-like morphology and are poorly crystallised. Pre-anodisation and the presence of Li in the alloy are key factors for the nanowire growth, which likely proceeds via a dissolution-precipitation mechanism. The roles of Li can be attributed to the prohibition of the formation of passivation film on the alloy surface and the acceleration of the formation of OH À anions through hydrogen-evolution reaction.

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Electrochemical behavior of Mg–Li, Mg–Li–Al and Mg–Li–Al–Ce in sodium chloride solution

Cited by 131 publications

References 25 publications

Investigation of Sodium Phosphate and Sodium Dodecylbenzenesulfonate as Electrolyte Additives for AZ91 Magnesium-Air Battery

Investigation of Sodium Phosphate and Sodium Dodecylbenzenesulfonate as Electrolyte Additives for AZ91 Magnesium-Air Battery

Corrosion of Biocompatible Mg66+xZn30-xCa4 (x=0.2) Bulk Metallic Glasses

Self-growth of micro- and nano-structured Mg(OH)₂on electrochemically anodised Mg–Li alloy surface

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Electrochemical behavior of Mg–Li, Mg–Li–Al and Mg–Li–Al–Ce in sodium chloride solution

Cited by 131 publications

References 25 publications

Investigation of Sodium Phosphate and Sodium Dodecylbenzenesulfonate as Electrolyte Additives for AZ91 Magnesium-Air Battery

Investigation of Sodium Phosphate and Sodium Dodecylbenzenesulfonate as Electrolyte Additives for AZ91 Magnesium-Air Battery

Corrosion of Biocompatible Mg66+xZn30-xCa4 (x=0.2) Bulk Metallic Glasses

Self-growth of micro- and nano-structured Mg(OH)2on electrochemically anodised Mg–Li alloy surface

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Self-growth of micro- and nano-structured Mg(OH)₂on electrochemically anodised Mg–Li alloy surface