Effect of hot rolling and subsequent annealing on electrochemical discharge behavior of AP65 magnesium alloy as anode for seawater activated battery

Wang, Naiguang; Wang, Richu; Peng, Chaoqun; Feng, Yan; Chen, Bin

doi:10.1016/j.corsci.2012.06.024

Cited by 118 publications

(68 citation statements)

References 35 publications

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“…According to the composition analysis, the contents of impurities in AP65 alloy are significantly lower than that of each alloying element. Moreover, iron regarded as an impurity is encased in the Al 8 Mn 5 phase, as proved by the previous report (Ref 6). Hence, effect of impurities on the discharge and corrosion behavior of the testing sample is negligible.…”

Section: Microstructuresmentioning

confidence: 51%

“…1b). The detailed analysis of these Al 8 Mn 5 particles was described previously ( Ref 2,6). According to the composition analysis, the contents of impurities in AP65 alloy are significantly lower than that of each alloying element.…”

Section: Microstructuresmentioning

confidence: 99%

“…It is generally considered that the discharge performance of seawater-activated battery is mainly determined by the anode material, of which the alloying composition and microstructure feature exert a prominent effect on enhancing the cell voltage and inhibiting the parasitic corrosion reaction ( Ref 2,5). Thus, great effort has been made to obtain an improved anode performance, such as adding several alloying elements into magnesium, using heat treatment or plastic deformation to modify the microstructure of magnesium alloy ( Ref 1,2,5,6). All these methods refine the grains and make the alloying elements or secondary phases distribute homogeneously in the magnesium matrix; hence, accelerating the self-peeling of the discharge products (i.e., Mg(OH) 2 ) and inhibiting the side hydrogen evolution reaction occurring on the electrode surface (Ref 2, 6, 7).…”

Section: Introductionmentioning

confidence: 99%

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Discharge and Corrosion Performance of AP65 Magnesium Alloy in Simulated Seawater: Effect of Temperature

Wang

Peng

et al. 2014

J. of Materi Eng and Perform

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The discharge and corrosion performance of AP65 magnesium alloy in simulated seawater with different temperatures is investigated by electrochemical techniques and corrosion morphology observation. The results indicate that AP65 alloy can hardly be activated at a large current density in the 0°C simulated seawater, whereas the activation time is shortened, and the potential exhibits a significantly negative shift in the 35°C simulated seawater. However, the increase in temperature promotes the localized corrosion and thus is detrimental to the anode efficiency of AP65 alloy. Moreover, the effect of seawater temperature and current density on the surface morphology of AP65 alloy during the discharge process is also analyzed.

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Section: Microstructuresmentioning

confidence: 51%

Section: Microstructuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Discharge and Corrosion Performance of AP65 Magnesium Alloy in Simulated Seawater: Effect of Temperature

Wang

Peng

et al. 2014

J. of Materi Eng and Perform

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“…The specific energy of the seawater battery using MgeHg alloys as anode can reach 150 W h kg À1 , compared with 30 W h kg À1 of lead acid battery. The open potential of MgeHg alloys in a 3.5 wt% NaCl solution is À2.0 V (vs.SCE) [17], compared with À1.8 V (vs.SCE) of Mge6%Ale5%Pb alloys [15]. However, the good results of the Mg anodes obtained in high power seawater battery still meet with problems such as bad deformability, large self-corrosion velocity and low current efficiency [18].…”

Section: Introductionmentioning

confidence: 96%

“…But, these investigations demonstrate that the MgeAl and MgeMn anodes have no enough electrochemical activity to produce the huge battery power. The developed magnesium anode materials with high cell voltage are AP65 (Mge6%Ale5%Pb) [15], Mge7%Tle5%Al [5] and MgeHg alloys [16]. The specific energy of the seawater battery using MgeHg alloys as anode can reach 150 W h kg À1 , compared with 30 W h kg À1 of lead acid battery.…”

Section: Introductionmentioning

confidence: 99%

Influence of aging treatments on microstructure and electrochemical properties in Mg–8.8Hg–8Ga (wt%) alloy

2013

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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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Effect of hot rolling and subsequent annealing on electrochemical discharge behavior of AP65 magnesium alloy as anode for seawater activated battery

Cited by 118 publications

References 35 publications

Discharge and Corrosion Performance of AP65 Magnesium Alloy in Simulated Seawater: Effect of Temperature

Discharge and Corrosion Performance of AP65 Magnesium Alloy in Simulated Seawater: Effect of Temperature

Influence of aging treatments on microstructure and electrochemical properties in Mg–8.8Hg–8Ga (wt%) alloy

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

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