颗粒二氧化硅对硫酸电解液性能的影响

Influence of grained silica on performance of electrolyte of sulfuric acid

在颗粒二氧化硅中加入铅酸蓄电池用的硫酸电解液（密度１．２８ｇ·ｃｍ－３）可以制得不流动的硫酸电解质。二氧化硅量对硫酸电解液的性能有影响。经测试，二氧化硅含量以１７％～１８％为宜。二氧化硅含量增加，电解质中硫酸的相对活度下降，电解质的电导也下降。这些变化归因于颗粒二氧化硅的吸附性。

The non fluid electrolyte (silica 17%～18% was obtained by mixing grained silica with solution of sulfuric acid density of 1.28 g/cm 3. The quantity of silica has influenced the performance of electrolyte. The testing results indicate that increasing the relative activity of sulfuric acid and conductivity of electrolyte are descended with the increase of quantity of silica in electrolyte. These performance changes are attributed to the adsorptivity of silica. However the silica does not participate in electrode reaction.