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首页> 外文期刊>Journal of Solid State Electrochemistry >Influence of acidic ionic liquids as an electrolyte additive on the electrochemical and corrosion behaviors of lead-acid battery
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Influence of acidic ionic liquids as an electrolyte additive on the electrochemical and corrosion behaviors of lead-acid battery

机译：酸性离子液体作为电解质添加剂对铅酸电池电化学和腐蚀行为的影响

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The aim of this study is to introduce the application of some acidic ionic liquids (ILs) as an electrolyte additive in lead-acid batteries. A family of alkylammonium hydrogen sulfate ILs, which are different in the number of alkyl chain, is investigated with the aim to compare their effects on the electrochemical behavior of Pb–Sb–Sn alloy in sulfuric acid solution. The hydrogen and oxygen gas evolution potential and anodic layer characteristics were investigated employing cyclic and linear sweep voltammetric methods. The morphological changes of the PbSO4 layer that formed on the electrode surface were confirmed using scanning electron microscopy. Also, potentiodynamic polarization curves, electrochemical impedance spectroscopy, and an equivalent circuit analysis were used to evaluate the corrosion behaviors of the Pb–Sb–Sn alloy in the presence of ILs. The obtained results indicate that hydrogen and oxygen evolution overpotential of lead–antimony–tin alloy increases in the solution containing IL and mainly depends on the number of alkyl chain in alkylammonium cation. It is clearly observed that the morphology of PbSO4 layer changes under the influence of ILs. The corrosion studies show an increase in corrosion resistance of lead alloy in the presence of some ILs. Also, the electrochemical effects of ILs in conversion of PbSO4 to PbO2 and vice versa were investigated by carbon-PbO paste electrode. Cyclic voltammogram of carbon-PbO electrode shows that in the presence of ILs, oxidation and reduction peak currents increase, while reversibility decreases.
机译：这项研究的目的是介绍一些酸性离子液体（ILs）作为铅酸电池中的电解质添加剂的应用。为了比较它们对硫酸溶液中Pb-Sb-Sn合金电化学行为的影响，研究了烷基链数不同的烷基硫酸氢铵ILs。利用循环和线性扫描伏安法研究了氢气和氧气的逸出电位和阳极层特性。使用扫描电子显微镜确认了在电极表面上形成的PbSO 4 层的形态变化。同样，电位动力学极化曲线，电化学阻抗谱和等效电路分析被用于评估ILs存在下Pb-Sb-Sn合金的腐蚀行为。所得结果表明，含IL的溶液中铅-锑-锡合金的氢和氧释放超电势增加，并且主要取决于烷基铵阳离子中的烷基链数。可以清楚地观察到，在ILs的作用下，PbSO 4 层的形态发生了变化。腐蚀研究表明，在某些IL的存在下，铅合金的耐蚀性增加。此外，通过碳-PbO糊状电极研究了ILs在PbSO 4 转化为PbO 2 以及反之时的电化学作用。碳-PbO电极的循环伏安图显示，在存在IL的情况下，氧化和还原峰电流增加，而可逆性降低。

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