Performance of Al-0.5 Mg-0.02 Ga-0.1 Sn-0.5 Mn as Anode for Al-Air Battery

被引：40
作者：
Ma, Jingling [1 ,2 ]
Wen, Jiuba [1 ]
Gao, Junwei [1 ]
Li, Quanan [1 ]
机构：
[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471003, Peoples R China
[2] Henan Univ Sci & Technol, Collaborat Innovat Ctr Nonferrous Met, Luoyang 471003, Peoples R China
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2014年 / 161卷 / 03期
关键词：
ELECTROCHEMICAL-BEHAVIOR; ALUMINUM; CORROSION; ALLOYS; OXIDE;
D O I：
10.1149/2.074403jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this research, Al-air battery based on Al-0.5 Mg-0.02 Ga-0.1 Sn-0.5 Mn anode with industrial 2N8 aluminum was prepared, the corrosion behavior and the battery performance were investigated in 2 molL(-1) NaCl, 4 molL(-1) NaOH, 4 molL(-1) NaOH + 0.2 molL(-1) ZnO, 7 molL(-1) KOH and 7 molL(-1) KOH + 0.2 molL(-1) ZnO solutions. The results show that compared with in alkaline solutions, the alloy has higher electrochemical performance and lower self-corrosion rate in 2 molL(-1) NaCl, the corrosion potential and the self-corrosion rate of the alloy in 2 molL(-1) NaCl are -1.401 V (vs Hg/HgO) and 0.0008 cm year(-1), respectively. At a current density of 20 mAcm(-2), the operate voltage of Al-air battery is 1.116 V, and the anodic utilization rate is 83.7% in 2 molL(-1) NaCl. The morphology after discharge is passivity attributed to the surface hydroxide layer on the alloy in 2 molL(-1) NaCl. The high anodic utilization during discharge in 2 molL(-1) NaCl is partially responsible for the higher Rt, which is well validated by EIS measurement. (C) 2014 The Electrochemical Society. All rights reserved.
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收藏
页码：A376 / A380
页数：5
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