Effect of magnesium on the electrochemical behavior of lithium anode in LiOH aqueous solution used for lithium–water battery

Zhang, Ziyan; Chen, Kanghua; Ni, Erfu

doi:10.1016/j.electacta.2010.01.092

Cited by 13 publications

(3 citation statements)

References 26 publications

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“…It is noticed that Al(OH) 3 and MgCO 3 are formed in KOH containing CO 2 , while Li 2 CO 3 is formed only on the electrode surface in LiOH under the same conditions 44 . At the same time, H + ions are released as follows: …”

Section: Resultsmentioning

confidence: 86%

Tracing the impact of CO2 on the electrochemical and charge–discharge behavior for Al–Mg alloy in KOH and LiOH electrolytes for battery applications

El-sayed,

Abdelsamie,

Elrouby

2024

Sci Rep

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For the first time, it has been found that the electrochemical performance of the Al–Mg alloy as an anode in alkaline batteries has been markedly enhanced in the presence of CO2 and LiOH as an electrolyte. This work compares the electrochemical performance of an Al–Mg alloy used as an anode in Al-air batteries in KOH and LiOH solutions, both with and without CO2. Potentiodynamic polarization (Tafel), charging-discharging (galvanostatic) experiments, and electrochemical impedance spectroscopy (EIS) are used. X-ray diffraction spectroscopy (XRD) and a scanning electron microscope (SEM) outfitted with an energetic-dispersive X-ray spectroscope (EDX) were utilized for the investigation of the products on the corroded surface of the electrode. Findings revealed that the examined electrode’s density of corrosion current (icorr.) density in pure LiOH is significantly lower than in pure KOH (1 M). Nevertheless, in the two CO2-containing solutions investigated, icorr. significantly decreased. The corrosion rate of the examined alloy in the two studied basic solutions with and without CO2 drops in the following order: KOH > LiOH > KOH + CO2 > LiOH + CO2. The obtained results from galvanostatic charge–discharge measurements showed excellent performance of the battery in both LiOH and KOH containing CO2. The electrochemical findings and the XRD, SEM, and EDX results illustrations are in good accordance.

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Section: Resultsmentioning

confidence: 86%

Tracing the impact of CO2 on the electrochemical and charge–discharge behavior for Al–Mg alloy in KOH and LiOH electrolytes for battery applications

El-sayed,

Abdelsamie,

Elrouby

2024

Sci Rep

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“…Thus, it could be found that a small amount of Mg(OH) 2 could be formed in the β-Li phase during the hydrogen charging process. Zhang et al [44] reported that the mixture of LiOH/Mg(OH) 2 could effectively promote the corrosion resistance of a Li-Mg electrode. Similarly, it could be speculated that the β-Li phase could also be protected by the LiOH/Mg(OH) 2 film.…”

Section: Discussionmentioning

confidence: 99%

Effect of the Surface Film Formed by Hydrogen Charging on the Corrosion Behavior of an As-Cast Mg–8%Li (in wt. %) Alloy

Wang

et al. 2023

Coatings

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In this study, the effect of electrochemical hydrogen charging on the corrosion behavior of an as-cast Mg–8%Li alloy was investigated. It was revealed that after being cathodically hydrogen charged in a 0.1 M NaCl solution at a constant current density of 50 mA/cm2 for 3 h, a product film with an average thickness of 20 μm was formed in the α-Mg phase, whilst the average thickness of the product film being formed in the β-Li phase was 6 μm. When the charging time was prolonged to 18 h, the thicknesses of the product films being formed on the α-Mg and β-Li phases were increased to 75 and 20 μm, respectively. The results of the grazing incidence X-ray diffraction (GIXRD) testing showed that the product films of the differently charged samples mainly consisted of Mg(OH)2, LiOH and Li2CO3. The formed product films on the two matrix phases were dense and could hinder the erosion of Cl− in a solution, and hence improved the corrosion resistance of the alloy. After being hydrogen charged for 3 h, the charge-transfer resistance (Rct) value of the alloy was increased from 527 to 1219 Ω·cm2. However, when the hydrogen charging time was prolonged to 18 h, the Rct was slightly reduced to 1039 Ω·cm2 due to the cracking of the surface product films and the interfacial cracking of the film/substrate matrix.

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“…2 The corrosion reaction of lithium with water resulting in parasitic corrosion. 3,4 The parasitic corrosion reaction is highly undesirable because it produces no useful electrical energy and consumes active lithium. The reaction is highly exothermic and can detrimentally accelerate local corrosion.…”

Section: Introductionmentioning

confidence: 99%

Effects of nonionic surfactant on the parasitic corrosion of lithium anode in lithium–water battery

Deyab

2016

RSC Adv.

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Effect of magnesium on the electrochemical behavior of lithium anode in LiOH aqueous solution used for lithium–water battery

Cited by 13 publications

References 26 publications

Tracing the impact of CO2 on the electrochemical and charge–discharge behavior for Al–Mg alloy in KOH and LiOH electrolytes for battery applications

Tracing the impact of CO2 on the electrochemical and charge–discharge behavior for Al–Mg alloy in KOH and LiOH electrolytes for battery applications

Effect of the Surface Film Formed by Hydrogen Charging on the Corrosion Behavior of an As-Cast Mg–8%Li (in wt. %) Alloy

Effects of nonionic surfactant on the parasitic corrosion of lithium anode in lithium–water battery

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