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Effect of 6‐thioguanine, as an electrolyte additive, on the electrochemical behavior of an Al–air battery
Materials and Corrosion ( IF 1.8 ) Pub Date : 2020-03-18 , DOI: 10.1002/maco.202011542 Changsheng Hou 1 , Shixing Chen 2 , Zuokai Wang 1 , Guixiang Wang 1 , Guojun Dong 1
Materials and Corrosion ( IF 1.8 ) Pub Date : 2020-03-18 , DOI: 10.1002/maco.202011542 Changsheng Hou 1 , Shixing Chen 2 , Zuokai Wang 1 , Guixiang Wang 1 , Guojun Dong 1
Affiliation
In this study, the electrochemical behavior of an Al–air battery is improved by mixing 6‐thioguanine into 4.0 M NaOH electrolyte. The electrochemical performance of the Al electrodes is analyzed using potentiodynamic polarization, potentiostatic oxidation, and electrochemical impedance spectroscopy. The surface morphology of the Al electrodes after discharging for 1,000 s is characterized using scanning electron microscopy coupled with X‐ray elemental mapping for Al, O, C, N, and S. Furthermore, the utilization efficiencies of these samples are also determined. The results show that the corrosion resistance of the Al electrodes initially increases and then decreases with an increase in 6‐thioguanine concentration. The presence of 6‐thioguanine enhances the corrosion resistance to the maximum, with a corrosion current density (Icorr) of 6.170 mA/cm2, and corrosion inhibition efficiency (η) of 36.56%, at 0.5 mM of 6‐thioguanine.
中文翻译:
6-硫鸟嘌呤作为电解质添加剂对铝空气电池电化学行为的影响
在这项研究中,通过将6-硫鸟嘌呤混入4.0 M NaOH电解质中可以改善铝空气电池的电化学行为。使用电位动力学极化,恒电位氧化和电化学阻抗谱分析铝电极的电化学性能。放电1000 s后的Al电极表面形貌通过扫描电子显微镜和X射线元素映射对Al,O,C,N和S进行表征。此外,还确定了这些样品的利用效率。结果表明,铝电极的耐蚀性首先随着6-硫鸟嘌呤浓度的增加而增加,然后降低。6-硫鸟嘌呤的存在可最大程度地提高耐腐蚀性,并具有腐蚀电流密度(在0.5 mM的6-硫鸟嘌呤下,I corr)为6.170 mA / cm 2,缓蚀效率(η)为36.56%。
更新日期:2020-03-18
中文翻译:
6-硫鸟嘌呤作为电解质添加剂对铝空气电池电化学行为的影响
在这项研究中,通过将6-硫鸟嘌呤混入4.0 M NaOH电解质中可以改善铝空气电池的电化学行为。使用电位动力学极化,恒电位氧化和电化学阻抗谱分析铝电极的电化学性能。放电1000 s后的Al电极表面形貌通过扫描电子显微镜和X射线元素映射对Al,O,C,N和S进行表征。此外,还确定了这些样品的利用效率。结果表明,铝电极的耐蚀性首先随着6-硫鸟嘌呤浓度的增加而增加,然后降低。6-硫鸟嘌呤的存在可最大程度地提高耐腐蚀性,并具有腐蚀电流密度(在0.5 mM的6-硫鸟嘌呤下,I corr)为6.170 mA / cm 2,缓蚀效率(η)为36.56%。