负极板硫酸盐化对电池的影响

电池负极板硫酸盐化就是负极上PbSO4不可逆变为PbO2和Pb。难以充电复原。负极硫酸盐化原因较多：长期欠充、负极去极化、放电后未及时充电、电解液浓度太高、电解液的层化现象，都会引起负极硫酸盐化。电解液层化即浓度差异，浓度过高与浓度过稀都属于硫酸的钝化浓度区，只有浓度适当的区域才有活性，本质是降低了活性物质的利用率。充电反应是放电的逆反应，由于电解液浓差，充电反应只在合适浓度区内进行，大大降低了充电效率，即充电难以进行。由此可以看到：随着持续充／放循环与经年浮充，就有越来越多的PbSO4沉积在电池槽底，伴随电解液浓度增加，硫酸铅结晶粗化，硫酸盐化就严重。 The battery anode plank vitriol turns be can not go against to change into PbO2 and Pb on PbSO4 of anode.It is hard to refresh to recover.The anode vitriol turns reason more:After owing Chong and anode to turn, turn on electricity very much over a long period of time don't refresh in time, the electrolyte density is too high, the layer of electrolyte will arouse anode vitriol's turning to turn a phenomenon.The electrolyte layer turns namely density difference, density lead Gao and density over sparse all belong to the bluntness of sulfuric acid to turn density area, only density adequacy of there is just activity in district, the essence is the utilization that lowered activity material.Refresh to respond to is the adverse reaction for turning on electricity, thick bad because of electrolyte, refresh reaction carries on in the suitable density area and consumedly lowers to refresh an efficiency, then refresh hard carry on.Can see from here:Along with keep on Chong/put circulation with after one year float Chong, have more and more PbSO4s deposition at battery slot bottom, accompany with an electrolyte density to increase, the sulfuric acid lead crystallizes thick turn, the vitriol turns severity.