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

A technology of colloidal electrolyte and lead-acid battery, which is applied in the direction of lead-acid battery, lead-acid battery construction, and final product manufacturing. Uneven distribution of colloidal electrolyte and other problems, to achieve the effect of improving the overall charge acceptance, prolonging the cycle life of charge and discharge, and improving efficiency and uniformity

A technology of colloidal electrolyte and lead-acid battery, which is applied in the direction of lead-acid battery, lead-acid battery construction, and final product manufacturing. Uneven distribution of colloidal electrolyte and other problems, to achieve the effect of improving the overall charge acceptance, prolonging the cycle life of charge and discharge, and improving efficiency and uniformity

CN101740818AInactive Publication Date: 2010-06-16HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The specific steps of preparation are as follows: step 1, first mix silicon dioxide powder, sodium hydroxide and deionized water in a weight ratio of 1:0.85:10, and then stir for 20 minutes to obtain a sodium silicate solution. Add potassium sulfate into dilute sulfuric acid with a concentration of 65%, and dissolve to obtain a dilute sulfuric acid mixed solution; wherein, the content of potassium sulfate in the dilute sulfuric acid mixed solution is 0.1 wt%. Then the dilute sulfuric acid mixed solution is added in the sodium silicate solution and stirred for 0.5h to obtain a silica colloidal suspension solution whose sulfuric acid content is 30wt%; wherein, the weight ratio between the dilute sulfuric acid mixed solution and the sodium silicate solution is 1: 1. Step 2, first mix the nano-scale fumed silica powder with deionized water, and prepare a suspension of fumed silica nano-powder with a solid content of 4wt%; wherein, the monomer of the nano-scale fumed silica ...

Embodiment 2

[0018] The specific steps of preparation are as follows: step 1, first mix silicon dioxide powder, sodium hydroxide and deionized water in a weight ratio of 1:1:10, and then stir for 24 minutes to obtain a sodium silicate solution. Potassium sulfate was then added into dilute sulfuric acid with a concentration of 68%, and dissolved to obtain a dilute sulfuric acid mixed solution; wherein, the content of potassium sulfate in the dilute sulfuric acid mixed solution was 0.2 wt%. Then the dilute sulfuric acid mixed solution is added in the sodium silicate solution and stirred for 0.6h to obtain a silica colloidal suspension solution whose sulfuric acid content is 34wt%; wherein, the weight ratio between the dilute sulfuric acid mixed solution and the sodium silicate solution is 1.4: 1. Step 2, first mix the nano-scale fumed silica powder with deionized water, and prepare a suspension of fumed silica nano-powder with a solid content of 5wt%; wherein, the monomer of the nano-scale f...

Embodiment 3

[0020]The specific steps of preparation are as follows: step 1, first mix silicon dioxide powder, sodium hydroxide and deionized water in a weight ratio of 1:1.2:10, and then stir for 28 minutes to obtain a sodium silicate solution. Potassium sulfate is then added into dilute sulfuric acid with a concentration of 70%, and dissolved to obtain a dilute sulfuric acid mixed solution; wherein, the content of potassium sulfate in the dilute sulfuric acid mixed solution is 0.3wt%. Then the dilute sulfuric acid mixed solution is added in the sodium silicate solution and stirred for 0.7h to obtain a silica colloidal suspension solution whose sulfuric acid content is 38wt%; wherein, the weight ratio between the dilute sulfuric acid mixed solution and the sodium silicate solution is 1.8: 1. Step 2, first mix nano-scale fumed silica powder with deionized water, and prepare a suspension of fumed silica nano-powder with a solid content of 6wt%; wherein, the monomer of nano-scale fumed silic...

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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...

Claims

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Application Information

Patent Timeline
16 Jun 2010
Publication
CN101740818A
IPC
H01M10/10; H01M10/12
CPC
Y02E60/126; Y02E60/10; Y02P70/50
Inventors
陈小川; 田兴有