正极添加剂对极板孔隙结构和性能的影响  

Effects of Additives on the Structure of Micro-Pores and Discharging Performance of Positive Plates in Lead Acid Batteries

作　　者：李燕月[1] 刘月英[1] 王伯羲[1] 

机构地区：[1]北京理工大学材料科学与工程学院,北京100081

出　　处：《北京理工大学学报》2004年第8期743-746,共4页Transactions of Beijing Institute of Technology

基　　金：国家部委预研项目(TS9609)

摘　　要：对不同添加剂的铅酸蓄电池正极放电性能进行研究.采用单片正极电池在电池容量受正极控制的条件下,以不同放电倍率恒流放电,分别测定了加入Bi2O3,CdSO4,CaSO4和PbO2等添加剂的单片正极容量和能量,获得了较高的比容量和比能量的提高率.首次应用图像分析仪测定了极板的平均孔径、孔表面积、孔数及分布等孔结构参数,并拍摄了正极板表面的显微图像照片.探讨了不同添加剂对正极孔结构及性能的影响规律和机理.The discharging performance of positive active mass containing different additives in lead-acid batteries was studied. On the condition that the capacity of lead-acid battery was limited by a single positive plate, the discharging capacity and energy of lead-acid batteries added with different kinds of additives, such as Bi_2O_3, CdSO_4, CaSO_4 and PbO_2, was tested at different rates of discharge. On the basis of experimental results, higher specific capacity and energy were observed than was recently reported. Some parameters of average diameter, surface area, numbers and distribution of micro-pores were tested by microscopic imaging analysis apparatus and some scanning pictures were taken. Relevant laws of influence and mechanism of the additives were discussed.

关 键 词：比能量 放电性能 孔隙结构 影响机理 

分 类 号：TM912.1[电气工程—电力电子与电力传动]