胶体电解质胶凝时间的调控  

Regulating the gelling time of colloidal electrolyte

作　　者：孙小祥[1] 赵剑曦[2] 

机构地区：[1]黔南民族师范学院化学化工学院,贵州黔南州558000 [2]福州大学化学学院,福建福州350108

出　　处：《电池》2017年第1期31-34,共4页Battery Bimonthly

摘　　要：从制备工艺的选择、胶凝剂的含量、温度和混合胶配方等4个角度,调控胶体电解质的胶凝时间。胶/酸混合工艺能制得长胶凝时间的胶体电解质,分散粒径越小,胶凝时间越长。在现有抽真空灌胶条件下,气相二氧化硅的含量须小于3.5%。降低温度能延长胶凝时间,要求制备过程中对硫酸进行预冷和减小混合时硫酸的浓度,以降低稀释热。采用气相二氧化硅与硅溶胶混合制成的混合胶配方能延长胶凝时间,并提高电池的性能。The regulation of gelling time was discussed on preparation technology,gelator content,temperature effect and hybrid colloidal electrolyte.The gelling time could be prolonged by using the sol and acid mixing technology,with decreasing size,the gelling time increased.As the vacuum system,the fumed silica content should be less than 3.5%.The gelling time also could be prolonged in lower temperature,which required precooling sulfuric acid and reducing sulfuric acid concentration in preparation process.The gelling time was prolonged and the performance of gel batteries was improved by using the formulation of hybrid colloidal electrolyte which mixed fumed silica with sol silica.

关 键 词：气相二氧化硅(F-SiO2) 胶体电解质 胶凝时间 铅酸电池 

分 类 号：TM912[电气工程—电力电子与电力传动]