With the needs for higher capacity and use in automotive applications, the safety of lithium ion batteries is becoming more and more important. Heat resistant layers of ceramic particles on separators or on electrodes to suppress short circuit current are now in practical use. Zeon started development of materials for such needs, and succeeded in commercialization of binder for heat resistant layer in 2005. Since then, rapid expansion of markets has led to wider use of Zeon's binder.
A heat-resistant layer coated on the surface of the separator or electrode enhances adhesion at the interface.
Suppression of Thermal Shrinkage
The heat-resistant layer maintains its shape, suppressing thermal shrinkage of the separator when the battery overheats.
Enhanced Electrolyte Injection
The formation of a heat-resistant layer on the surface of the separator or electrode prevents degradation of electrolyte properties, thereby improving electrolyte filling capability.
Typical Applications
Electric Vehicles
Large-Scale Storage Batteries
Mobile Phones
Power Tools
Quality Test
Coated on separator
Thinner Separator for Higher Battery Capacity
A surface coated with a heat-resistant layer that effectively suppresses thermal shrinkage and enhances electrolyte permeability, allowing for the creation of a thinner separator.
Adhesion between functional layer and separator fim
Strong Adherence to the Separator
A heat-resistant layer with strong adherence is formed using a binder that is closely bonded to the separator.
