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首页> 外文期刊>International Journal of Electrochemistry >Role of Indium Alloying with Lead as a Means to Reduce the Passivation Phenomena in Lead/Acid Batteries
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Role of Indium Alloying with Lead as a Means to Reduce the Passivation Phenomena in Lead/Acid Batteries

机译：铟与铅合金化的作用，以减少铅/酸电池中的钝化现象

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摘要

The influence of indium content on the anodic behaviour of Pb-In alloys in 4 M H2SO4solution is investigated by potentiodynamic, potentiostatic, chronopotentiometric, and cyclic voltammetric techniques. The composition and microstructure of the corrosion layer on Pb-In alloys are characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy analysis (EDX), and scanning electron microscopy (SEM). The potentiodynamic and chronopotentiometric curves show that the anodic behavior of all investigated electrodes exhibits active/passive transition. The active dissolution (except for alloy I) and passive currents increase with increasing both In content and temperature. This indicates that the conductivity of the anodic film on Pb-In alloy is enhanced. This study exhibits that indium catalyses the oxidation of Pb (II) to Pb (IV) and facilitates the formation of a more highly conductive corrosion layer on lead. Alloy I (0.5% In) exhibits that the corrosion rate is lower, while the passive current is higher than that of Pb. XRD, EDX, and SEM results reveal that the formation of both PbSO4and PbO on the surface decreases gradually with increasing In level in the alloy and completely disappear at higher In content (15% In). Therefore, recharge of the battery will be improved due to indium addition to Pb.
机译：通过电势，恒电位，计时电位和循环伏安技术研究了铟含量对4 M H2SO4溶液中Pb-In合金阳极行为的影响。通过X射线衍射（XRD），能量色散X射线光谱分析（EDX）和扫描电子显微镜（SEM）表征Pb-In合金上腐蚀层的组成和微观结构。电位动力学和计时电位曲线表明，所有研究电极的阳极行为均表现出主动/被动跃迁。活性溶解（合金I除外）和无源电流都随In含量和温度的升高而增加。这表明Pb-In合金上的阳极膜的电导率提高了。这项研究表明，铟催化Pb（II）氧化为Pb（IV），并促进在铅上形成更高导电性的腐蚀层。合金I（0.5％In）的腐蚀速率较低，而无源电流则高于Pb。 XRD，EDX和SEM结果表明，随着合金中In含量的增加，表面PbSO4和PbO的形成逐渐减少，而在In含量较高（In为15％）时，PbSO4和PbO则完全消失。因此，由于将铟添加到Pb中，电池的充电将得到改善。

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