Discharge and corrosion behaviour of Mg-Li-Al-Ce-Y-Zn alloy as the anode for Mg-air battery

Wang, Naiguang; Wang, Richu; Feng, Yan; Xiong, Wenhui; Zhang, Junchang; Deng, Min

doi:10.1016/j.corsci.2016.07.002

Cited by 130 publications

(68 citation statements)

References 53 publications

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“…As well recognised, the inherently high rate of Mg corrosion in aqueous environments restricts the wider engineering application of Mg [1,3,8]. The high dissolution rate of Mg anodes at open-circuit causes "parasitic discharge" issues in primary Mg battery systems [9][10][11]. Thus, using appropriate approaches for controlling the corrosion of Mg is of vital importance.…”

Section: Mmentioning

confidence: 99%

Reducing the corrosion rate of magnesium via microalloying additions of group 14 and 15 elements

Liu

Scully

Williams

et al. 2018

Electrochimica Acta

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A characteristic of magnesium (Mg) dissolution is that dissolution is accompanied by a concomitant increase in the hydrogen evolution reaction (HER), a phenomenon known as cathodic activation. When magnesium undergoes free corrosion or forced dissolution in response to anodic polarisation, cathodic activation is manifest, which allows magnesium dissolution to readily proceed. However, recent work revealed that alloying magnesium with micro additions of arsenic, As (a group 15 element) was capable of retarding cathodic activation, resulting in a significant reduction in the corrosion rate of Mg-As alloys. As such, in the pursuit of elements with similar chemical and electrochemical properties to arsenic, but with less toxicity, a number of group 14 and 15 elements were alloyed with magnesium and reported herein. Based on the binary alloying additions studied herein, it was revealed that Bi, Ge, Pb, Sb and Sn, demonstrated suppression of cathodic activation of Mg following anodic polarisation (about one order of magnitude lower based on the cyclic galvanostatic-potentiostatic testing), in addition to lower free corrosion rates (about one order of magnitude based on the mass loss and hydrogen evolution testing). Employing a number of corrosion rate assessments, including online atomic emission spectroelectrochemistry, it was shown that reduction in Mg corrosion rates-historically considered difficult to achieve-can be robustly demonstrated. The present work has implications for the development of more corrosion resistant Mg alloys, Mg anodes for cathodic protection, or for the use of Mg as a primary battery electrode.

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Section: Mmentioning

confidence: 99%

Reducing the corrosion rate of magnesium via microalloying additions of group 14 and 15 elements

Liu

Scully

Williams

et al. 2018

Electrochimica Acta

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“…Lithium (Li) has been widely added to bring new β‐Li phase, enhancing the electrochemical activity of Mg‐based anodes . Furthermore, minor rare earth (RE) further promotes the discharge performance of Mg‐Li‐based anodes . Wang and his coworkers reported the excellent discharge performance of Pb‐doped Mg‐based anodes (AP65 alloy for seawater activated batteries), and Wen et al followed‐up a systematic work on the compositional optimization of Mg‐Al‐Pb‐(Zn) anode .…”

Section: Introductionmentioning

confidence: 99%

“…10,11 Furthermore, minor rare earth (RE) further promotes the discharge performance of Mg-Li-based anodes. [12][13][14][15][16] Wang and his coworkers reported the excellent discharge performance of Pb-doped Mg-based anodes (AP65 alloy for seawater activated batteries), [17][18][19][20][21][22] and Wen et al followed-up a systematic work on the compositional optimization of Mg-Al-Pb-(Zn) anode. 23 Similarly, minor RE (Ce, La, Y, etc) was also considered for the modification of Mg-Al-Pb anode to receive desired discharge performance.…”

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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“…[4,15,16] Mg-Li anodes can be a promising candidate for seawater battery anodes. [13,17,18] Nonetheless, there is a prominent safety issue in the melting process. The environmentally friendly Mg-Al-Sn alloys have attracted the attention of researchers recently.…”

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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Discharge and corrosion behaviour of Mg-Li-Al-Ce-Y-Zn alloy as the anode for Mg-air battery

Cited by 130 publications

References 53 publications

Reducing the corrosion rate of magnesium via microalloying additions of group 14 and 15 elements

Reducing the corrosion rate of magnesium via microalloying additions of group 14 and 15 elements

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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Discharge and corrosion behaviour of Mg-Li-Al-Ce-Y-Zn alloy as the anode for Mg-air battery

Cited by 130 publications

References 53 publications

Reducing the corrosion rate of magnesium via microalloying additions of group 14 and 15 elements

Reducing the corrosion rate of magnesium via microalloying additions of group 14 and 15 elements

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