Modified alkaline electrolyte with 8-hydroxyquinoline and ZnO complex additives to improve Al-air battery
Modified alkaline electrolyte with 8-hydroxyquinoline and ZnO complex additives to improve Al-air battery
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8-羟基喹啉和ZnO复合添加剂改性碱性电解液改善铝空气电池
DOI：
10.1016/j.jpowsour.2019.05.077
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发表时间：
2019-08
影响因子：
9.2
通讯作者：
Tong Lin
中科院分区：
文献类型：
--
作者：
Chong Zhu;Hanxue Yang;Anqi Wu;Daquan Zhang;Lixin Gao;Tong Lin
通过析氢实验和电化学测试，研究了铝空气电池AA5052合金负极在碱性电解液中的行为。8-羟基喹啉(8-HQ)和氧化锌作为复合添加剂可以有效抑制AA5052阳极在碱性溶液中的自腐蚀，并且8-羟基喹啉与氧化锌之间存在协同作用。表面分析表明，8-HQ与Al~(3+)离子形成络合膜。氧化锌的存在促进了合金基体上复合膜的稳定性，并显著降低了析氢速率。AA5052合金阳极在上述碱性溶液中具有良好的放电性能，放电后阳极表面有较强的荧光。复合添加剂的使用使阳极利用率从56.2%提高到70.3%。
The behaviours of AA5052 alloy anode of the Al-air battery in alkaline electrolytes are investigated by the hydrogen gas evolution test and the electrochemical measurements. The combination of 8-hydroxyquinoline (8-HQ) and ZnO as the hybrid additives can effectively suppress the self-corrosion of AA5052 anode in alkaline solution, and there is a synergism between 8-HQ and ZnO. The surface analysis demonstrates a complex film is formed via the chelation of 8-HQ with Al3+ions. The presence of ZnO promotes the stability of the complex film on the alloy matrix, and lowers the hydrogen evolution rate dramatically. A good discharge performance is found for AA5052 alloy anode in the above alkaline solution, and the anodic surface has a strong fluorescence after the discharge. The use of hybrid additives increases the anode utilization efficiency from 56.2% to 70.3%.
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