Description
PTFE, a highly stable fluoropolymer, is added to the active material paste (a mixture of lead oxide, water, and sulfuric acid) during plate production. It functions in the following ways:
Acts as a fibrous binder: When mixed into the paste, PTFE forms a fine fibrous network that holds the active material particles together. This network prevents the active material from shedding from the grid during charge/discharge cycles, a common cause of battery failure.
Enhances structural integrity: The network created by the PTFE fibers increases the mechanical strength and density of the paste. This results in a more robust and durable battery plate.
Improves porosity: The addition of PTFE to the paste helps create a more uniform, porous structure. This allows for better electrolyte penetration and increases the number of reaction sites, improving ionic conductivity and overall battery performance.
Boosts conductivity: By optimizing the paste’s density and structure, PTFE can improve both the ionic and electronic con