Volume 71, Issue 10 pp. 1680-1690
ARTICLE

Effect of microstructure on discharge performance of Al–0.8Sn–0.05Ga–0.9Mg–1.0Zn (wt%) alloy as anode for seawater-activated battery

Zibin Wu

Zibin Wu

Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, China

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Haitao Zhang

Corresponding Author

Haitao Zhang

Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, China

Correspondence

Haitao Zhang, Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China.

Email: [email protected]

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Jing Zou

Jing Zou

Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, China

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Ke Qin

Ke Qin

Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, China

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Chunyan Ban

Chunyan Ban

Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, China

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Jianzhong Cui

Jianzhong Cui

Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, China

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Hiromi Nagaumi

Hiromi Nagaumi

High-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou, Jiangsu, China

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First published: 14 April 2020
Citations: 4

Abstract

The electrochemical performance and discharge behavior of Al–0.8Sn–0.05Ga–0.9Mg–1.0Zn (wt%) alloys in as-cast, homogenized, and annealed states were investigated through electrochemical means, corrosion rate test, and discharge test in a 3.5 wt% NaCl solution. Results suggest that the discharge performance of this alloy is enhanced by rolling and subsequent annealing treatment. This is attributed to the fact that the microstructure of the alloy is greatly improved through rolling and subsequent annealing treatment. The 400°C-annealed alloy exhibits the most excellent discharge activity than alloys in other states, which is due to more regions being activated by a finer and more uniform Sn-rich phase. Furthermore, the anode efficiency of the 400°C-annealed alloy is higher than that of as-cast and homogeneous alloys due to the more uniform distribution of Sn in the aluminum matrix.

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