铅酸蓄电池用胶体电解质的比较研究

Studies on the gelled electrolytes for lead acid batteries

采用钾离子体系代替钠离子体系 ,采用气相二氧化硅溶胶进行配胶 ,并把它与普通硅溶胶及超纯硅溶胶配制的胶体电解质进行比较研究。探讨了凝胶剂多少及密度不同的硫酸对凝胶状态及电化学性能的影响。采用表面观察 ,扫描电镜 ,循环伏安 ,阴极极化等手段 ,对共存离子、胶体表面状态、凝胶的形成与结构等方面进行了较深入研究 ,分析其原理与机理。通过比较研究 ,钾离子体系气相二氧化硅在凝胶状态、表面结构和电性能方面都表现出色 ,可认为是配制优良胶体电解质的优化组合。

The new gelled -electrolyte replacing Na + system with K + system and fumed silica replacing silica solution was used to compared with the traditional gelled -electrolytes prepared by common silica solution and super pure silica solution The effect of the dose of gel and the density of sulfuric acid on the gel habitus and electrochemical performance were studied The state of coexit ion, surface habitus of the gelled -electrolyte, the formation and texture of gel were investigated by means of observation, SEM, the cyclic voltammetry and the liner sweep voltammtry The experimental results demonstrated that the K + system and the fumed silica were suitable for preparing gelled-electrolyte