What is the role of PVDF in lithium-ion batteries?
PVDF acts as a binder between electrode species and collectors in lithium-ion batteries, increasing their lifespan and energy density.
What are the properties of PVDF?
PVDF is insoluble, has a low melting point, low permeation values, and a lower strength effect compared to other fluoropolymers.
What is one application of PVDF besides being a binder in batteries?
PVDF is used in wiring processes due to its high dialectic constant and dispersion factor.
What industries/sectors use PVDF binders?
PVDF binders are used in the oil and gas, biomedical science, pharmaceutics, food and beverage processing, waste management, construction, and batteries and electronic components industries.
What are the components of a lithium-ion battery?
A lithium-ion battery consists of a separator coating, an electrode binder, electrodes (cathode and anode), and other active materials like graphite.
What are the criteria for a battery binder?
The criteria for a battery binder include water absorption, ductility, adhesion, swelling in electrodes, purity, crystallinity, melting point, and distribution of molecular weight.
Why is the molecular weight of PVDF important in battery production?
The molecular weight of PVDF affects its stability and performance in batteries. Low molecular weight can lead to instability, while high molecular weight can cause swelling but not complete dissolution.
What other products can be made from PVDF?
PVDF can be used to produce pipes, sheets, films, containers, and other resin-based products.
What are some characteristics of PVDF's chemical makeup?
PVDF possesses high thermal and electrochemical stability and is highly resistant to solvents, hydrocarbons, and acids.
Why is PVDF commonly used as a binder in lithium-ion batteries?
PVDF is used as a binder in lithium-ion batteries due to its strong adhesion, high thermal and electrochemical stability, and chemical resistance in the harsh environment of the batteries.
