Silicate gel electrolyte and preparation method thereof

Abstract

The invention discloses a silicate gel electrolyte. The silicate gel electrolyte is prepared from the following components in percentages by weight: 30% to 40% of deionized water, 60% to 70% of a sulfuric acid solution with the density of 1.5 to 156 g/ml, 1.5% to 2% of nano-fumed silica, 0.5% to 1% of sodium silicate, 0.5% to 1% of ammonium sulfate, 0.5% to 1% of potassium sulphate and 0.15% to 0.2% of ammonia water. The silicate gel electrolyte disclosed by the invention is unlikely to aggregate to cause settlement layering.

Description

technical field [0001] The present application relates to the field of batteries, in particular to a silicate colloidal electrolyte and a preparation method thereof. Background technique [0002] At present, silicate colloidal electrolytes are commonly used in the production process of batteries, and one of the most commonly used methods is to mix nano fumed silica powder with a certain proportion of dilute sulfuric acid as a gelling agent. The powder has good thixotropy, fluidity, and thickening properties. It can be used in batteries to improve the electrical properties of batteries and prolong their service life. However, due to the small particle size and large specific area of ​​nano fumed silica, it is very easy to adsorb each other to cause agglomeration, sedimentation and stratification, which affects performance indicators such as battery capacity and use effect. Contents of the invention [0003] The present application provides a silicate colloidal electrolyte ...

AI Technical Summary

Problems solved by technology

However, due to the small particle size and large specific area of ​​nano fumed silica, it is very easy to adsorb each other to cause agglomeration and sedimentation and stratification, which affects performance indicators such as battery capacity and use effect.