Battery binders

Water-based anode binders for lithium-ion rechargeable batteries

Key features:

• Easy to use and compatible with standard industry manufacturing processes
• Outstanding electrode adhesion and mechanical properties
• Excellent electrochemical performance
• High-capacity battery cells with excellent capacity retention

Synthomer supplies high-performance raw materials designed to ensure rechargeable cells deliver high charge capacity, reliability and battery life. Anode binders hold together active cell material (graphite or silicon) and adhere it to the copper current collector. For performance and safety reasons these bonds must be maintained throughout a battery’s life.

Styrene butadiene rubber (SBR) has become the most widely use lithium-ion anode binder due to its balance of versatility and electrochemical performance. Synthomer SBR binders have been engineered to meet the demanding needs of cell manufacturers. This ensures they are a drop-in to existing manufacturing processes, and deliver excellent battery performance.

Our world class manufacturing and logistics network enables us to supply customers around the world with these high-performance binders for use in EVs, energy storage and handheld devices.

Synthomer’s LITEX LB^TM SBR binders are supplied as ready-to-use water-based latices that have excellent formulation compatibility with graphite and other anode actives. They offer excellent process stability ensuring that they are able to withstand anode mixing processes while minimising manufacturing losses.

LITEX LB^TM binders have been optimised to provide maximum adhesion to active materials and to copper. This ensures they retain the bonds between active material and current collector over a lifetime of charge and discharge cycles, so that the battery retains its capacity for longer. Synthomer offers grades customised to maximise conductivity and performance at low temperatures.