Gelled electrolyte of lead-acid storage battery and preparation method thereof

Abstract

The invention discloses a gelled electrolyte of a lead-acid storage battery and a preparation method thereof. The electrolyte comprises the following components: sulphuric acid, silicon dioxide, sodium sulfate, polyacrylamide, polyacrylate sodium, sodium molybdate, calcium molybdate, magnesium molybdate, sodium tungstate, potassium sulfate and deionized water; the method comprises the following steps of: adding the sodium sulfate into dilute sulphuric acid to obtain a dilute sulphuric acid mixed solution, then adding the dilute sulphuric acid mixed solution into a sodium silicate solution to obtain a silicon dioxide colloidal suspension, next firstly adding the sodium molybdate, the calcium molybdate, the magnesium molybdate and the sodium tungstate into a vapor-phase silicon dioxide nano-powder suspension to obtain a nano vapor-phase silicon dioxide powder suspension, then preparing a polyacrylamide solution and a polyacrylate sodium solution, then firstly uniformly mixing the silicon dioxide colloidal suspension and the nano vapor-phase silicon dioxide powder suspension, and then adding the polyacrylamide solution and the polyacrylate sodium solution into the mixed suspension to prepare the gelled electrolyte of the lead-acid storage battery. The gelled electrolyte of the lead-acid storage battery can be widely used in a storage battery with the capability of more than 20AH.

Description

technical field [0001] The invention relates to a battery electrolyte and a preparation method thereof, in particular to a lead-acid battery colloid electrolyte and a preparation method thereof. Background technique [0002] At present, people often use electric bicycles, such as various commercially available ones, for the convenience and energy saving of travel, and the general improvement of environmental protection awareness. In these electric bicycles, lead-acid batteries are basically used as the power source, and the quality of the electrolyte in the lead-acid battery determines the performance and service life of the battery. In order to improve the performance of the electrolyte, people have made Unremitting efforts, such as "a mixed colloidal electrolyte for lead-acid batteries and its preparation method" disclosed in the Chinese invention patent application publication CN 1747216A published on March 15, 2006. The invention intends to provide a mixed colloid elect...

AI Technical Summary

Problems solved by technology

Although this mixed colloidal electrolyte integrates the advantages of sodium silicate colloidal electrolyte and vapor phase silica colloidal electrolyte, it meets the requirements of lead-acid batteries and has been widely used in the field of power lead-acid batteries. Because the nano-silica powder has a strong coagulation ability, the penetration ability of the mixed colloidal electrolyte is significantly reduced, especially when it is applied to a battery with a larger size, the penetration ability of the mixed colloidal electrolyte is difficult to meet the requirements , resulting in the uneven distribution of the mixed colloidal electrolyte inside the battery, causing a significant drop in the electrical performance of the battery; The cycle life is only less than 200 times