Fumed silica is a white tasteless ultrafine powder material, with thickening, anti-caking, control system rheology and thixotropic effects, in addition to the traditional application, in recent years in colloidal batteries have been widely Applications. Gel battery is a new battery developed on the basis of traditional lead-acid battery, also known as "maintenance-free battery", with no pollution to the environment, self-discharge, vibration resistance, resistance to ultra-high temperature, ultra-low temperature resistance, battery performance Stable and so on.