The role and content of silicon in the electrolyte is very different. The following Kanglida Electronic Power Co., Ltd. will tell you about it.

 

 

 

1. Air silicon is used as a gel in electrolytes, which emphasizes the thickening thixotropic properties of gas silicon and its excellent stability.

 

 

 

2. The content of gas silicon in the electrolyte:

 

 

 

The content of silicon in the electrolyte will reach the optimum effect at a certain point. As the content of SiO2 in the colloidal electrolyte increases, the pore volume, pore size and porosity decrease, and the cavity in which the colloidal structure aggregates decreases, resulting in the formation of condensation. The glue is relatively hard, difficult to cut, and the glue is separated. The internal resistance of the colloidal electrolyte increases, the diffusion rate of H+ and S042- ions decreases, and the charge and discharge of the battery also decrease accordingly. In theory, the SiO2 content in the electrolyte should be as low as possible to obtain the best porosity; it must be high enough to keep the colloidal structure stable, but the SiO2 content is too high, the battery capacity is low, and the electrolyte viscosity is high. It is difficult to fill. Patent technology at home and abroad usually uses a gel content between 4% and 10%.

 

 

 

 

 

Air silicon model selection:

 

 

 

Under the condition of different content and other conditions, the smaller the particle size of SiO2 particles, the better the dispersion uniformity, the larger the specific surface area, the higher the reactivity, and the closer the distance between the rubber particles, the better the thixotropy, but The particle size of SiO2 should not be too small. When the particle size of silica is less than 5 nm, the gelation time is short, the gel strength is large, and the thixotropic property is poor, which easily causes hydration stratification; however, when the particle diameter is larger than 50 nm, the gel strength is poor, and the gel cannot be Stable existence. Generally, the gas phase SiO2 has a particle diameter of 10 to 30 nm, and M5 can be selected.

 

 

 

Gas silicon needs to meet the requirements

 

 

 

The gas phase SiO2 suitable for the colloidal electrolyte should have a reasonable particle size with uniform distribution.

 

 

 

The content of SiO2 should be greater than 99.8 %;

 

 

 

The content of impurity Fe2O3 is less than 1.0 × 10-5;

 

 

 

The content of HCL is less than 5.0 × 10-6;

 

 

 

The content of Al2O3 is less than 1.0×10-4;

 

 

 

Tamped Density = 50 g/L;

 

 

 

The compact density is approximately 120 g/L.

 

 

 

These parameters all affect the quality of the colloid.

 

 

 

For the AGM sealed lead storage battery, although the AGM diaphragm retains most of the electrolyte of the battery, it must be such that 10% of the diaphragm pores do not enter the electrolyte. The oxygen generated by the positive electrode is absorbed by the negative electrode through the pores reaching the negative electrode.

 

 

 

The main component of the colloidal electrolyte is a functional compound with a particle size of nearly nanometer. The rheology is good, and it is easy to carry out the liquid filling of the lead storage battery. After the colloidal electrolyte enters the interior of the battery or is charged for several hours, it will gradually gel, and the liquid electrolyte will be transformed into a gel. The surfactant is added with various surfactants to help resist gelation before filling the battery. It helps to prevent the sulphation of the plates after filling the battery, reduces the corrosion of the grid, and improves the reaction utilization rate of the active materials of the plates.

 

Zhengzhou Kanglida Electronic Power Co., Ltd. was established in 2000, specializing in the development, production and sales of 2V, 4V, 6V, 12V four series of maintenance-free lead-acid batteries, gel batteries and their electronic chargers. Products are widely used in anti-theft alarm system, fire alarm system, building intercom system, elevator emergency evacuation system, emergency light, attendance machine, sprayer, electronic scale, children's electric motorcycle, cartoon inflatable model, car wash, table turntable, parking lock, Buzzer lights, traffic light, DC screen, solar, wind, UPS, EPS and other backup systems.