Effects of microstructure on the electrochemical discharge behavior of Mg-6wt%Al-1wt%Sn alloy as anode for Mg-air primary battery

Xiong, Hanqing; Yu, Kun; Yin, Xiang; Dai, Yongnian; Yang, Yan; Zhu, Huasheng

doi:10.1016/j.jallcom.2016.12.172

Cited by 118 publications

(42 citation statements)

References 37 publications

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“…The incorporation of some effective elements, such as Al, Hg, Mn, Ca, Y, Ga, or Sn, contributes to the self‐peeling of corrosion products and inhibits hydrogen evolution side reactions of the magnesium anode . A series of magnesium anode materials have been investigated and reported to have a high discharge potential and utilization rate, such as Mg–Al–Sn, Mg–Hg–Ga, and Mg–Li–Al–Zn . Mg–Al alloys particularly have attracted attention due to their excellent electrochemical properties and low cost .…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Second Phase and Grain Size on Electrochemical Discharge Performance of Extruded Mg–9Al–xIn Alloys as Anodes for Mg–Air Battery

Wang

et al. 2020

Adv Eng Mater

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The extruded Mg–9Al–xIn alloys are systematically studied as the potential anode material for primary Mg–air batteries. In this study, the effect of grain size and second phase particles on electrochemical behavior and discharge performance of Mg–Al–In alloys with In content ranging from 0 to 1.0 wt% is investigated through microstructure characterization, electrochemical measurements, and half‐cell discharge tests. The results of this study indicate that the grain size of the alloy is remarkably refined to a range between 7.60 and 2.23 μm, and the distribution of the β‐Mg17Al12 phase can be effectively modified after the In element is added to the extruded Mg–9Al alloy. In addition, as the content of the In element increases, the area fraction of the second phase decreases while the size increases. The Mg–9Al–0.5In alloy is shown to have the highest discharge potential (−1.63 V) and the most negative corrosion potential (−1.51 V) among the studied alloys. In addition, the anode efficiency and power density of the Mg–9Al–0.5In alloy reaches 78.2% and 76.8 mW cm−2, respectively. The excellent discharge performance of the alloy is attributed to fine grain size, large area fraction, and dispersed micron‐sized precipitates and loose corrosion products. Consequently, these results reveal that Mg–9Al–0.5In alloy can serve as a promising anode material for Mg–air batteries.

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Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Second Phase and Grain Size on Electrochemical Discharge Performance of Extruded Mg–9Al–xIn Alloys as Anodes for Mg–Air Battery

Wang

et al. 2020

Adv Eng Mater

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“…Similarly, minor RE (Ce, La, Y, etc) was also considered for the modification of Mg‐Al‐Pb anode to receive desired discharge performance . The Sn‐doped Mg anodes also drew some attention because of their promoted discharge performance after different post‐treatment . Yuan et al investigated the electrochemical performance of Mg‐3Al anodes with Ga, In, and Sn .…”

Section: Introductionmentioning

confidence: 99%

“…[24][25][26][27][28] The Sn-doped Mg anodes also drew some attention because of their promoted discharge performance after different post-treatment. [29][30][31][32] Yuan et al investigated the electrochemical performance of Mg-3Al anodes with Ga, In, and Sn. 33 However, the reported anodes still have several shortcomings, such as the safety concerns (Li), toxicity (Pb), and low efficiency at large current density (Ga, In, and Sn).…”

Section: Introductionmentioning

confidence: 99%

The role of Al ₂ Ca and Al ₂ (Sm,Ca,La) particles in the microstructures and electrochemical discharge performance of as‐extruded Mg‐3wt.%Al‐1wt.%Zn‐based alloys for primary Mg‐air batteries

et al. 2019

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Summary In this work, the role of Al2Ca and Al2(Sm,Ca,La) particles in the microstructures and electrochemical discharge performance of the as‐extruded Mg‐3wt.%Al‐1wt.%Zn‐based alloys has been reported and discussed for the anode design of Mg‐air batteries. The Al2Ca and Al2(Sm,Ca,La) particles strongly refine the grains of the as‐extruded AZ31 alloy from 9.1 ± 4.1 μm down to 5.1 ± 3.3 μm. The Al2Ca and Al2(Sm,Ca,La) particles increase the outputting cell voltage and discharge capacity of the modified AZ31 alloy. The AZ31‐Ca alloy exhibits the highest discharge capacity and anodic efficiency of 1153 mAh/g and 52.5%, respectively, at 10 mA/cm2. The promoted discharge performance should be mainly attributed to the grain refinement (improving the corrosion resistance) and fine Al2Ca phase throughout the matrix (beneficial for uniform dissolution of Mg phase). Additional Al2(Sm,Ca,La) cubic particles further stimulate the anodic kinetics and aggravate the local dissolution of Mg phase near around, resulting in the deterioration of discharge performance.

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“…The relationship between Sn addition and the discharge performance of Mg anodes has not yet been established in the limited research. [10,19] Alloying with In and Ce can effectively prevent self-corrosion of Mg anodes; however, their high costs will certainly prevent their large-scale applications to the development of high efficient Mg anodes. [6,12,20] Among the developed magnesium alloys, Mg-Al-Zn alloys exhibiting relatively high corrosion resistance and energy density are promising Mg anodes for seawater batteries, whereas the low cell voltage and utilization efficiency restrict their further applications.…”

Section: Introductionmentioning

confidence: 99%

Effects of microstructure evolution on discharge properties of AZ31 alloy as anode for seawater battery

Xie

Jiang

et al. 2020

Materials & Corrosion

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In recent years, many researchers have been focusing on improving the discharge properties of AZ31 magnesium alloy for battery applications. In this paper, the equal‐channel angular pressing (ECAP) is used as a preferred way of refining the microstructure to enhance the discharge characteristics of AZ31 alloy as the anode for seawater batteries. The electrochemical discharge behaviors of ECAP‐processed AZ31 alloy are investigated along extrusion surfaces, normal cross‐sections, and transverse cross‐sections and compared with as‐cast and homogenized samples. On the basis of the findings, the anode efficiency is improved effectively through the ECAP method, with approximate isotropy in the discharge behaviors of refined AZ31 alloy. The enhanced discharge performance can be attributed to the refined grains, uniform grain sizes, and dispersed β‐Mg17Al12 after ECAP processing.

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Effects of microstructure on the electrochemical discharge behavior of Mg-6wt%Al-1wt%Sn alloy as anode for Mg-air primary battery

Cited by 118 publications

References 37 publications

Synergistic Effect of Second Phase and Grain Size on Electrochemical Discharge Performance of Extruded Mg–9Al–xIn Alloys as Anodes for Mg–Air Battery

Synergistic Effect of Second Phase and Grain Size on Electrochemical Discharge Performance of Extruded Mg–9Al–xIn Alloys as Anodes for Mg–Air Battery

The role of Al ₂ Ca and Al ₂ (Sm,Ca,La) particles in the microstructures and electrochemical discharge performance of as‐extruded Mg‐3wt.%Al‐1wt.%Zn‐based alloys for primary Mg‐air batteries

Effects of microstructure evolution on discharge properties of AZ31 alloy as anode for seawater battery

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Effects of microstructure on the electrochemical discharge behavior of Mg-6wt%Al-1wt%Sn alloy as anode for Mg-air primary battery

Cited by 118 publications

References 37 publications

Synergistic Effect of Second Phase and Grain Size on Electrochemical Discharge Performance of Extruded Mg–9Al–xIn Alloys as Anodes for Mg–Air Battery

Synergistic Effect of Second Phase and Grain Size on Electrochemical Discharge Performance of Extruded Mg–9Al–xIn Alloys as Anodes for Mg–Air Battery

The role of Al 2 Ca and Al 2 (Sm,Ca,La) particles in the microstructures and electrochemical discharge performance of as‐extruded Mg‐3wt.%Al‐1wt.%Zn‐based alloys for primary Mg‐air batteries

Effects of microstructure evolution on discharge properties of AZ31 alloy as anode for seawater battery

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The role of Al ₂ Ca and Al ₂ (Sm,Ca,La) particles in the microstructures and electrochemical discharge performance of as‐extruded Mg‐3wt.%Al‐1wt.%Zn‐based alloys for primary Mg‐air batteries