一种新型铅酸蓄电池正极板栅的研究

Study on new type positive grid of lead-acid battery

铅酸蓄电池活性物质的利用率和极板的尺寸有很大关系,如何开发质量轻、活性物质利用率高的板栅是现在的一个热门课题。介绍了一种新型立体网状正极板栅。对以这种板栅制成的电极为正极的电池,采用恒流放电、循环伏安、交流阻抗等测试方法进行了研究。通过不同电流密度下的恒流放电实验,证明新型板栅能够提高正极活性物质利用率9%;交流阻抗实验表明,新型板栅电极的阻抗为常规板栅电极的10%;循环伏安实验表明,新型板栅电极的峰值电流高于常规电极。实验结果证明:新型板栅优于常规板栅,可提高铅酸蓄电池的综合性能。

The utilization of lead-acid battery active material is of great relationship with the size of grid. It is very necessary to develop a grid that has lightweight and high utilization of active material. A new type solid reticulation positive grid was studied. Constant DC discharge, CV and AC impedance were adopted to measure the performance of cell that was fabricated from this new type grid. The results of the study on constant DC discharge in different current density proves that this grid can increase the utilization of positive active material to 9%; the study of EIS proves that the resistance of new type grid is only 10% of that of normal electrode; the study of diagrams of CV proves that the peak current of this new type grid is higher than that of normal electrode. Experiment results demonstrate that new type grid has better performance than the normal electrode and it can arise the integrate performance of battery.