硫酸体积分数对胶体电解液性能的影响  

INFLUENCES OF SULFURIC ACID CONCENTRATION ON THE PROPERTIES OF GEL LED-ELECTROLYTE

作　　者：吴玲[1] 蒋雄[1] 陈红雨[1] 张春梅[1] 吴昊[1] 

机构地区：[1]华南师范大学化学系,广东广州510631

出　　处：《华南师范大学学报（自然科学版）》2002年第3期54-58,共5页Journal of South China Normal University(Natural Science Edition)

基　　金：广东省自然科学基金项目 (994 2 10 )

摘　　要：以气相二氧化硅为凝胶剂 ,把它与不同体积分数的硫酸按一定比例混合制成胶体铅酸蓄电池用胶体电解质 .通过阴极极化、循环伏安、交流阻抗和粘度测定手段 ,研究硫酸体积分数对胶体电解质的凝胶性能及电化学性能的影响 .实验表明 ,在二氧化硅含量一致的情况下 ,胶体电解质的触变性随着硫酸浓度增大有所增强 .另外 。The gelled-electrolyte of the gelled-electrolyte bat te ries was prepared by blending silica soot as gelling agent with sulfuric acid ac cording to a certain proportion. The influences of the sulfuric acid concentrati on on the gel and electrochemical performances of gelled-electrolyte were studie d by means of cathodic polarization, cyclic voltammetry (CV), electrochemical im pedance spectroscopy (EIS), as well as viscosity determination. Experiments show that the thixotropy of gelled-electrolyte is increased as a funciton of the con centration of H 2SO 4. In addition, sulfuric acid concentration also affects to a certain degree the electrochemical performance of gelled-electrolyte.

关 键 词：铅酸蓄电池 硫酸 体积分数 胶体电解质 凝胶性能 电化学性能 电池容量二氧化硅 

分 类 号：TM912.1[电气工程—电力电子与电力传动]