Electrochemical properties and discharge performance of Mg-3Sn-xCa alloy as a novel anode for Mg-air battery

被引：55

作者：

Bao, Jiaxin ^{[1
,2
]}

Sha, Jianchun ^{[1
,2
]}

Li, Lianhui ^{[1
,2
]}

Liu, Zhoulin ^{[1
,2
]}

Tian, Jie ^{[1
,2
]}

Liu, Wenhong ^{[3
]}

Cui, Jianzhong ^{[1
,2
]}

Zhang, Zhiqiang ^{[1
,2
]}

机构：

[1] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China

[2] Northeastern Univ, Coll Mat Sci & Engn, Shenyang 110819, Peoples R China

[3] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 934卷

基金：

中国国家自然科学基金;

关键词：

Mg-air battery; Mg-Sn-Ca; Electrochemical behavior; Discharge performance; SN-CA ALLOYS; MECHANICAL-PROPERTIES; CORROSION BEHAVIORS; MAGNESIUM ALLOYS; HEAT-TREATMENT; MN-CA; AL-PB; MICROSTRUCTURE; LI; GA;

D O I：

10.1016/j.jallcom.2022.167849

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, Ca was introduced into the Mg-3Sn alloy as an environmentally friendly element. The elec-trochemical performance and discharge properties of Mg-3Sn-xCa (x = 0, 0.2, 0.6, 1.0 wt%) as an anode for Mg-air battery were investigated. The results revealed that the Mg-3Sn-1.0Ca alloy exhibited the best ac-tivity and the optimum discharge performance, reaching a voltage of 1.46 V at 2.5 mA cm-2 and a peak specific energy of 1277 mA h g-1 at 20 mA cm-2. The Ca element increases the activity of Mg-3Sn through phase modulation, which results in the presence of a large number of cracks in the discharge products and facilitates the maintenance of high and stable voltages. In addition, the refined grains increase the grain boundaries and expand the contact area with the cathode phase, which dissolves the Mg matrix sufficiently and reduces the chunk effect.(c) 2022 Elsevier B.V. All rights reserved.

引用

页数：12

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