摘要
为提高以工业铝为基体的铝合金在金属空气电池中的电化学性能,研究了不同含量的Mn元素及不同浓度电解液对Al-Zn-Sn-Ga合金电化学性能的影响,测试了不同Mn含量的合金在不同浓度KOH电解液中的开路电位、极化曲线和恒流放电等性能。结果表明,Mn元素能够明显改善铝合金阳极的性能,当加入的Mn含量为0.2%(质量分数)时,合金的析氢腐蚀最慢、电化学性能最佳,合金具有最好的综合性能;当电解液浓度为6 mol/L时,铝合金阳极的电化学性能明显优于4 mol/L,且阳极利用率几乎相同,表明该成分铝合金阳极适宜的电解液浓度为6 mol/L KOH。
In order to improve the electrochemical properties of aluminum alloys based on industrial aluminum in metal-air batteries,the effects of different contents of Mn elements and different concentrations of electrolytes on the electrochemical properties of Al-Zn-Sn-Ga alloys were investigated.Open circuit potential,polarization curves and galvanostatic discharge properties of alloys with different Mn contents in different concentrations of KOH electrolyte were tested.The results show that Mn element can significantly improve the performance of aluminum alloy anode.When the added Mn content is 0.2 wt%,the hydrogen evolution corrosion of the alloy is the slowest,the electrochemical performance is the best,and the alloy has the best comprehensive performance.When the concentration is 6 mol/L,the electrochemical performance of the aluminum alloy anode is obviously better than 4 mol/L,and the anode utilization rate is almost the same,indicating that the suitable electrolyte concentration of the aluminum alloy anode with this composition is 6 mol/L KOH.
作者
高思睿
杨炳林
贾志明
王月莹
何立子
GAO Sirui;YANG Binglin;JIA Zhiming;WANG Yueying;HE Lizi(Key Laboratory of Electromagnetic Machining of Materials,Northeastern University,Shenyang 110819,China;School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China)
出处
《功能材料》
CAS
CSCD
北大核心
2022年第8期8202-8207,共6页
Journal of Functional Materials
关键词
铝阳极
MN元素
电解液浓度
电化学性能
aluminum anode
Mn element
electrolyte concentration
electrochemical performance
作者简介
高思睿(1997-),男,硕士,师承何立子教授,从事铝空气电池阳极材料研究;通讯作者:何立子,E-mail:helizi@epm.neu.edu.cn。
