铅酸蓄电池负极有机膨胀剂吸附作用的初步分析  

The study on the absorption of organic expander in lead-acid batteries

作　　者：陈小川[1] 林永兴[1] 

机构地区：[1]中科院固体物理研究所,合肥230031

出　　处：《蓄电池》2006年第4期171-174,共4页Chinese LABAT Man

摘　　要：采用Zeta电势测量系统,FT-IR红外吸收光谱仪,测试了铅酸蓄电池中可溶性木质素磺酸钠的Zeta电势及其相关的功能团结构。研究发现可溶性木质素磺酸钠和铅离子有着很强的亲和力,可以吸附在氧化铅颗粒表面,改变其表面电性。分析结果认为木质素磺酸钠促进了氧化铅颗粒的凝聚,提高了颗粒之间的黏结强度,抑制了活性物质在和膏,干燥过程中由于毛细表面张力,而产生的收缩、板结现象。有利于负极形成多空隙的稳定结构。The Zeta potential of sodium lignosulphonate aqueous sol and PbO powder were measured. It is found that the soluble lignosulphonate Vanisperse-A has the strong affinity with Pb ions and can be absorbed on the surface of PbO grains and change their electric charge structure on the grain surface. The results show that the soluble Vanisperse-A promotes the agglomerate of PbO grains, and decreases the shrinkage of the green paste during Mixing and drying process of green paste. It is advantageous to the formation of the stable porous structure in negative active material.

关 键 词：铅酸蓄电池 有机膨胀剂 Zeta电势 吸附作用 

分 类 号：TM912.9[电气工程—电力电子与电力传动]