With the increasing demands for energy density in power batteries, the interfacial bonding strength between electrode binders and active materials has become a key factor limiting battery cycle life. Anhui Aiyota has launched a novel carboxyl-containing silane coupling agent, providing an innovative approach to modifying lithium-ion battery binders.

This product's molecular structure simultaneously contains carboxyl, alkoxysilane groups, and long-chain alkyl groups, enabling it to form hydrogen bonds and chemical bonds with binder molecules such as PVDF (polyvinylidene fluoride) and SBR (styrene-butadiene rubber). Simultaneously, it reacts with hydroxyl groups on the surface of cathode materials (such as ternary materials and lithium iron phosphate) through siloxane bonds. Experimental data shows that adding 0.5-1% of this coupling agent increases electrode peel strength by 50% and capacity retention by 8 percentage points after 1000 cycles.

In power battery applications, this product exhibits multiple advantages: improving the uniformity of binder dispersion in NMP or water; enhancing the structural stability of electrode materials during high-rate charge and discharge processes; reducing electrode interfacial impedance and improving rate performance; and inhibiting electrolyte erosion of the electrode interface, extending cycle life.

Aiyota carboxylsilane coupling agent is a light yellow, transparent liquid with a solid content of ≥95%, available in 25kg and 200kg packaging. The product has been validated by multiple battery companies and is compatible with both water-based and oil-based binder systems. Our technical team can provide electrode formulation optimization and coating process guidance services.