Effects of Texture and Discharge Products on the Discharge Performance of Mg Anodes for Mg Air Batteries

Yang, Hanbo; Lei, Bin; Wu, Liang; Jiang, Bin; Liu, Wenjun; Qin, Yang; Song, Jiangfeng; Huang, Guangsheng; Pan, Fusheng

doi:10.1149/1945-7111/abbb0b

Cited by 17 publications

(9 citation statements)

References 37 publications

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“…And it was believed that the corrosion resistance of atomic dense plane (0001) was better than that of ( ) 1010 and( ) 1120 . [71][72][73] As shown in Fig. 8, in terms of grains orientation, the modified texture reduced the corrosion resistance of annealed Mg-2Gd slightly, since some (0001) planes tilted toward TD.…”

Section: Discussionmentioning

confidence: 82%

Modified Microstructures and Corrosion Behaviors of Mg-Gd-Cu Alloys through Annealing Treatment

Zhong

Chai

et al. 2021

J. Electrochem. Soc.

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Corrosion rates of ideal Mg alloys used for sealing tools in petroleum industry should be able to be altered to adapt to different downhole environments, and corresponding mechanisms of modified corrosion rates need to be clarified. In this study, annealing treatments were carried out at 400 or 450 °C for 2 h to tune the microstructures and corrosion rates of Mg-2Gd-xCu (x = 0, 0.5 and 1 wt.%). Microstructures were characterized by scanning electron microscope, X-ray diffractometer and electron backscatter diffraction while corrosion behaviors were investigated by immersion and electrochemical tests. The results showed that after annealing, the growth in the average second phase size and the average grain size, the weakened basal texture and the eliminated residual stress contributed to reduced corrosion rates. As a result, corrosion rates of Mg-2Gd-0.5Cu and Mg-2Gd-1Cu decreased obviously but were still higher than 30 mm·y−1 after annealing, the recommended minimum corrosion rates. It proved that a gradient of corrosion rates of Mg-Gd-Cu can be achieved through annealing treatment, which were beneficial to further application of Mg-Gd-Cu in the field of oil and gas exploitation.

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Section: Discussionmentioning

confidence: 82%

Modified Microstructures and Corrosion Behaviors of Mg-Gd-Cu Alloys through Annealing Treatment

Zhong

Chai

et al. 2021

J. Electrochem. Soc.

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“…The low values of chi-squared (χ 2 ) indicated the good accuracy of the equivalent circuit and the fitting results. In general, the stronger activity of the anode can be reflected by the smaller resistances [24,29,45,62]. With increasing Sn content to 0.7wt%, the resistances and corresponding inductors decreased, indicating that the corrosion products could peel away from the surface of Mg-0.7Sn-1.4Y alloy easily [29].…”

Section: Eis Measurementmentioning

confidence: 99%

Discharge properties of Mg-Sn-Y alloys as anodes for Mg-air batteries

Yang

Jiang

et al. 2021

Int J Miner Metall Mater

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Mg-Sn-Y alloys with different Sn contents (wt%) were assessed as anode candidates for Mg-air batteries. The relationship between microstructure (including the second phase, grain size, and texture) and discharge properties of the Mg-Sn-Y alloys was examined using microstructure observation, electrochemical measurements, and galvanostatic discharge tests. The Mg-0.7Sn-1.4Y alloy had a high steady discharge voltage of 1.5225 V and a high anodic efficiency of 46.6% at 2.5 mA•cm −2 . These good properties were related to its microstructure: small grain size of 3.8 µm, uniform distribution of small second phase particles of 0.6 µm, and a high content (vol%) of ( )/( ) orientated grains. The scanning Kelvin probe force microscopy (SKPFM) indicated that the Sn 3 Y 5 and MgSnY phases were effective cathodes causing micro-galvanic corrosion which promoted the dissolution of Mg matrix during the discharge process.

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“…6 The application of Magnesium in the energy filed also attracted increasing attention for the abundant Mg resource and low cost. [7][8][9][10] Magnesium-ion batteries (MIBs), with promising high volumetric capacity, have been the alternative candidate for the Post-Lithium batteries. 7,8,[11][12][13][14][15] However, the formation of a passivation layer on the surface of Mg metal partially hinders the ion-movements and therefore restricts the development of pure Mg directly being the negative electrode.…”

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confidence: 99%

The Evaluation of Mg–Ga Compounds as Electrode Materials for Mg-Ion Batteries via Ab Initio Simulation

Song

Yuan

et al. 2021

J. Electrochem. Soc.

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The Mg–Ga alloy-type electrode is one of the potential anode materials for Magnesium-ion batteries (MIBs). In this work, the thermodynamic, electrochemical and kinetic properties of Mg–Ga compounds, i.e. Mg2Ga5, MgGa2, MgGa, Mg2Ga and Mg5Ga2, have been systematically studied. Combining the first-principles calculations and charge-discharge experimental results, the structure evolution and voltage curves of Mg–Ga compounds are presented, where the Mg–Ga compounds show low voltages and high capacity up to 1922 mAh·g−1 with Mg5Ga2. Additionally, the diffusion barriers of Mg in Mg–Ga alloys are low, which is favorable for the fast ion-transmission and then good rate performance as being anodes of MIBs.

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Effects of Texture and Discharge Products on the Discharge Performance of Mg Anodes for Mg Air Batteries

Cited by 17 publications

References 37 publications

Modified Microstructures and Corrosion Behaviors of Mg-Gd-Cu Alloys through Annealing Treatment

Modified Microstructures and Corrosion Behaviors of Mg-Gd-Cu Alloys through Annealing Treatment

Discharge properties of Mg-Sn-Y alloys as anodes for Mg-air batteries

The Evaluation of Mg–Ga Compounds as Electrode Materials for Mg-Ion Batteries via Ab Initio Simulation

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