Effect of In addition on the microstructure and discharge properties of AZ61 anode for seawater activated battery

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2025-06-09 DOI:10.1016/j.electacta.2025.146687

Yaxiao Gu , Jinghua Jiang , Qiuyuan Xie , Guowei Wang , Aibin Ma , Chaobing Ni

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引用次数: 0

Abstract

This study focused on evaluating and comparing the corrosion behavior and discharge properties of AZ61-xIn anode with those of AZ61 anode in a seawater activated battery. Various techniques were employed to examine the impact of indium (In) composition on corrosion and discharge characteristics of AZ61. The findings indicate there exists a competitive dissolution mechanism between indium (In) and aluminum (Al) within the magnesium (Mg) matrix, and the selective affinity of solid-solute of indium strongly promotes the segregation towards Al, particularly in the form of Mg₁₇Al₁₂. The uneven second phase distribution, along with indium addition that initiates the dissolving-reprecipitation mechanism, has the potential to disrupt the homogeneity of the protective layer. Among the investigated alloys, the as-cast AZ61–0.5In alloy combines corrosion resistance and discharge performance, showing potential for application in seawater activated batteries.

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添加剂对海水活化电池AZ61阳极微观结构和放电性能的影响

在海水活化电池中，对AZ61- xin阳极和AZ61阳极的腐蚀行为和放电性能进行了评价和比较。采用多种技术研究了铟（In）成分对AZ61腐蚀和放电特性的影响。结果表明，在镁（Mg）基体中存在着铟（In）和铝（Al）的竞争溶解机制，并且铟的固相溶质的选择性亲和性强烈地促进了铝的偏析，特别是以Mg17Al12的形式偏析。不均匀的第二相分布，以及铟的加入引发的溶解-再沉淀机制，有可能破坏保护层的均匀性。在所研究的合金中，铸态AZ61-0.5In合金兼具耐腐蚀性和放电性能，在海水活化电池中具有应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.