Jinsha Precipitated Silica Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of silica powder for lead acid battery pe separators in China. With abundant experience, we warmly welcome you to buy high quality products made in China here from our factory. Contact us for more details.

Precipitation Method Silica Powder /Silicone Dioxide for PE Separator in Lead-Acid Batteries

Silicon dioxide can reduce the crystallization rate of polymer systems and keep them in an amorphous state for a longer period of time. The granular silicon dioxide between the positive and negative electrode plates can maintain the consistency of the electrolyte in the battery and significantly reduce dry water faults by passing through oxygen holes. The introduction of silica through in-situ composite method is beneficial for improving the conductivity of P (VDF-HFP) based microporous polymer electrolytes. Silicon dioxide particles can absorb moisture from liquid electrolytes, reducing interfacial reactions. By adding silica powder to polymer lithium batteries, the microstructure, mechanical and electrical properties of the electrolyte membrane can be greatly improved, resulting in good conductivity and mechanical strength of the electrolyte membrane. The colloidal electrolyte prepared with silica has strong gel capacity, suitable viscosity, soft colloidal electrolyte, good thixotropy, moderate three-dimensional network structure of colloid, low resistance, large discharge current, high capacitance, no hydration stratification, and can greatly increase the cycle life of colloid.

Adding silica to the separator can increase the pore size and the total amount of colloidal electrolyte. Effectively preventing electrolyte stratification, reducing corrosion rate, and improving service life. Adding silica can improve the tensile strength of the partition and reduce the pore size of the partition; When the pressure on the partition exceeds 30kPa, the liquid absorption capacity of the partition with added silica exceeds that of the pure glass wool partition; The secondary lithium battery separator made by adding silica to the composite polymer has high liquid absorption, conductivity, and toughness. The electrolyte absorption rate reaches 184.4%, the room temperature conductivity is 1.20mS/cm, and the elongation at break is as high as 163%. The secondary lithium battery assembled using a composite polymer separator containing silica has a first discharge specific capacity of 834.8mAh/g, a 40th discharge specific capacity of 400mAh/g, and a cycle efficiency of over 99.8%, demonstrating good electrochemical performance.

Specifications:

JS-185C2