In this study, the influence of histidine as an electrolyte additive on the electrochemical performance of Al electrodes in 4.0 M KOH electrolyte is studied by measuring open‐circuit potential–time curves, potentiodynamic polarization, potentiostatic oxidation, and electrochemical impedance spectroscopy. The surface morphology of Al electrodes is characterized by scanning electron microscopy. The results show that the battery performance is significantly improved by adding histidine. Samples with 50 mM histidine exhibit the highest corrosion resistance and discharging current density among all the specimens, with the corrosion current density (I_corr) being 7.471 mA/cm² and corrosion inhibition efficiency (η) being 43.33%.

中文翻译：

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组氨酸作为电解质添加剂对4.0 M KOH电解质中Al电极电化学性能的影响

在这项研究中，通过测量开路电位-时间曲线，恒电位极化，恒电位氧化和电化学阻抗谱，研究了组氨酸作为电解质添加剂对4.0 M KOH电解质中Al电极电化学性能的影响。Al电极的表面形态通过扫描电子显微镜表征。结果表明，通过加入组氨酸可以显着改善电池性能。用50mM组氨酸的样品显示出所有样品中最高的耐腐蚀性和放电的电流密度，与腐蚀电流密度（我_更正件是7.471毫安/厘米）²和腐蚀抑制效率（η）为43.33％。