炭添加剂对VRLA电池性能的影响

Effect of carbon additive on the performance of VRLA battery

本文通过使用三种不同比表面积炭材料作为电池负极添加剂制作电池进行试验,探讨了不同比表面积炭材料对阀控式电池性能的影响。试验结果表明:高比表面积炭材料A2可以大大提高负极活性物质的导电性,使导电网络更加密集;高比表面积炭材料A2导电网络的存在,可以促进充电反应的深度进行,提高电池的充电接受能力;添加炭材料A2后,极板电化学反应活性提高,充电接受能力变好,负极硫酸盐化缓解,电池组内电池的一致性提高了,从而电池组的循环寿命提高了。

In this paper, VRLA batteries were tested to explore the effects of three kinds of carbon with different specific surface areas as negative electrode additives on the battery performances. The results showed that the high specific surface area carbon A2 can greatly improve the conductivity of the negative active material, and make the conductive network more intensive. The conductive network of high specific surface area carbon A2 can improve the charging reaction depth and charge acceptance ability of the battery. After addition of carbon A2, the electrochemical reaction activity and charge acceptance ability of negative plates became better, and sulfation was alleviated, therefore the cycle life of batteries was prolonged because of the increased consistency of batteries.