Abstract

In the present research, aluminum expanded mesh grids are considered for negative electrodes in lead-acid batteries. The conventional negative electrodes made from lead alloy grids are replaced by the expanded mesh grids that are made from a commercial aluminum alloy as they are lightweight, have higher conductivity, and are available in bulk. To accomplish this, aluminum grids were considered with their surfaces modified by lead coatings prior to electrode preparation. Hence Al grids find an envious place in lead-acid battery applications. In this study, Al grids were pretreated for surface cleaning followed by Zn coating, electroplating with Cu and hot-dip coating in a molten Pb alloy bath. The surface coated Al grids were analyzed using X-ray diffraction, field emission scanning electron microscopy, and energy dispersive X-ray analysis elemental mapping. Microhardness measurements were made on the prepared specimens. Electrochemical performance tests on 2V batteries at higher discharge rates and life cycles were conducted. The specific energy of batteries with Al grids was 80 W h/kg, which is 20% higher than that of a Pb grid type. By replacing Pb grids with surface modified Al grids in lead-acid batteries, the consumption of lead gets reduced by 5%, resulting in a cost-effective and environment-friendly approach.

中文翻译：

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以表面修饰的新型铝栅为电极基底增强铅酸电池的电化学性能

摘要

在目前的研究中，铝膨胀网栅被认为是铅酸蓄电池的负极。由铅合金格栅制成的常规负极被由商业铝合金制成的膨胀网状格栅代替，因为它们重量轻，具有较高的导电性并且可大量使用。为此，在准备电极之前，先考虑铝栅的表面经过铅涂层的改性。因此，铝栅在铅酸电池应用中占有令人羡慕的位置。在这项研究中，对铝栅进行了表面清洁的预处理，然后进行了Zn涂层，Cu电镀和在熔融的Pb合金浴中的热浸涂层。使用X射线衍射，场发射扫描电子显微镜，和能量色散X射线分析元素映射。在制备的样品上进行了显微硬度测量。在2V电池上以更高的放电速率和寿命周期进行了电化学性能测试。带有Al栅的电池的比能量为80 W h / kg，比Pb栅类型的比能量高20％。通过在铅酸电池中用表面改性的Al栅代替Pb栅，铅的消耗减少了5％，从而实现了具有成本效益和环境友好的方法。