[Anode Binder] The material technology leading the changes in life

In internal combustion engine vehicles, the engine is the most important part, but in electric vehicles, the lithium-ion battery, in addition to the motor, is the most important component.

The weight of the battery in an electric vehicle alone reaches 200kg, and in terms of battery capacity and mileage as well, lithium-ion batteries play a critical role in electric vehicles.

Lithium-ion batteries mainly consist of four components: cathode, anode, electrolyte, and separator.

The anode is coated with active material, conductive additive, and binder. Active material is the material involved in the electrode reaction of the battery.

The anode active material is a material that reversibly stores and releases lithium ions from the cathode and generates an electric current, and the conductive additive is the component that improves the electrical conductivity of LiMO2.

When in a charged state, lithium ions are present in the anode.

If the cathode and anode are connected with a conducting wire, lithium ions move to the cathode through the electrolyte, and electricity is generated as electrons separated from lithium ions move along the conducting wire.

The anode binder is synthetic latex in the form of an emulsion, which acts as an adhesive that helps fixate the active material and conductive additive on the copper substrate, which structures the anode.

LG Chem's anode binder mechanically stabilizes the anode active material and improves battery efficiency with excellent adhesion and resistance.

LG Chem will lead the innovation of high-capacity and high-efficiency lithium-ion batteries by strengthening R&D on battery materials.