基于可溶性铅(Ⅱ)离子电解液的铅酸液流电池

Study on lead-acid flow battery based on an electrolyte with soluble lead(Ⅱ)

使用恒流充放电方法研究了电流密度、负极集流体材料(石墨、紫铜和镍)及电解液中甲基磺酸浓度对铅酸液流电池充放电性能的影响。结果表明:大电流密度下工作时由于极化作用,电池的性能下降较大;使用紫铜为负极集流体的电池性能较高;随电解液中甲基磺酸浓度的增加电池的库仑效率轻微下降,电压效率小幅上升。

The effects of current density, materials for negative electrode current collector （graphite plate, copper and nickel sheet） and concentration of methanesulfonic acid （MSA） in electrolyte on the performance of lead-acid flow battery were studied by means of constant current charge/discharge cycling. The results show that the performance of battery decreases at higher charge/discharge current density due to higher polarization. Comparing with graphite plate or nickel sheet, the performance of battery with copper sheet as negative electrode current collector is better. It is also found that the concentration of MSA has some influence on the performance of battery. The coulombic efficiency of battery decreases slightly with the increase of concentration of MSA, whereas, voltage efficiency increases a little.