AZ61 and AZ61-La Alloys as Anodes for Mg-Air Battery

Journal Article · Mon Apr 01 04:00:00 EDT 2019 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-019-03985-5· OSTI ID:22970849

Wu, Yiping ^[1]; Wang, Zhifeng ^[2]; Liu, Yu; Li, Guofeng; Xie, Shaohui ^[1]; Yu, Hui ^[2]; Xiong, Hanqing ^[1]

---

1. Changsha University, Department of Mechanical and Electronic Engineering (China)
2. Hebei University of Technology, School of Materials Science and Engineering (China)

AZ61 and AZ61-0.5La (wt.%) alloys are prepared by the conventional casting method and then, AZ61 and AZ61-0.5La alloy sheets are obtained with multi-pass hot rolling. Microstructures and electrochemical properties of four alloys are investigated, and discharge properties are tested by an assembled Mg-air battery using alloy anode sheets with a dimension of 70 × 100 × 2.5 mm. Results show that Al{sub 11}La{sub 3} phases are formed in as-cast AZ61-0.5La alloy and promote the grain refinement and the formation of uniform microstructure in as-rolled AZ61-0.5La alloy. As-rolled AZ61-0.5La alloy exhibits a weak self-corrosion tendency but a strong discharge activity. After discharge test for 5 h, the Mg-air battery based on the as-rolled AZ61-0.5La sheet can provide the maximum power output of 1.625 W, and as-rolled AZ61-0.5La anode can supply the maximum energy density of 1417 mWhg{sup −1}. In addition, the relationship between microstructures and discharge properties is sufficiently described and discussed in this paper.

• OSTI ID: 22970849
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 4 Vol. 28; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANODES
ELECTROCHEMISTRY
ENERGY DENSITY
GRAIN REFINEMENT
MAGNESIUM ALLOYS
MICROSTRUCTURE
SHEETS