NMP N-Methylpyrrolidone

PAALi (Lithium Polyacrylate, also known as LiPAA) is a water-soluble, aqueous battery binder designed to improve mechanical integrity and interfacial adhesion in battery electrodes—especially silicon-based anodes where volume expansion can cause cracking, delamination, and rapid capacity fade. By enabling water-based slurry preparation, PAALi supports safer and more sustainable electrode fabrication compared with NMP-based PVDF systems.

How it works

Lithium polyacrylate contains carboxylate functional groups that promote strong interactions with active material surfaces and current collectors, helping to:

• increase particle-to-particle cohesion within the electrode film
• improve adhesion to the current collector (e.g., copper foil)
• maintain electrode structure during cycling-induced stress
  
  

Key specifications

• Water-soluble binder (aqueous)
• Viscosity (mPa·s): 4000 ± 2000
• Solid content: 4%
• pH: ~8
• Storage: keep sealed at room temperature
• Use: can be used directly or diluted with deionised water
  
  

Compatibility & typical use

TOB-PAALi is commonly used for silicon, SiOx, and silicon–carbon anode slurries, and can be blended with other aqueous binders (e.g., CMC/SBR) depending on coating rheology and flexibility requirements. It is compatible with standard lab-to-pilot electrode workflows including vacuum mixing, doctor-blade or slot-die coating, drying, calendaring, and coin/pouch cell assembly.

Applications

• High-capacity silicon-based anodes (Si, SiOx, Si–C)
• Aqueous processing routes for Li-ion R&D
• Electrode development where strong adhesion and crack resistance are critical

ScienceGears can support the full workflow around this binder—pairing it with electrode coating tools, coin cell assembly consumables, battery cyclers, and electrochemical characterisation using potentiostats (including EIS) for research-grade performance evaluation.