Battery supporting materials
Acrylonitrile Multi Copolymer Water Based Binder LA132 LA133 for Lithium Battery Cathode and Anode Slurry
Item Number : FZ31
Price varies based on specs and customizations
- Solid Content
- 15 ± 0.2 %
- Viscosity (40°C)
- ≥4800 mPa·s (132) / 7300-9300 mPa·s (133)
- Particle Size (D50)
- ≤1.2 μm (132) / ≤1.0 μm (133)
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Product Overview
This aqueous polymer binder is an advanced acrylonitrile multi-copolymer water dispersion engineered specifically for high-performance lithium-ion battery electrode manufacturing. Serving as an environmentally responsible, solvent-free alternative to traditional PVDF/NMP systems, the aqueous dispersion delivers exceptional bonding strength and mechanical integrity across both cathode and anode active material matrices. Its specialized molecular architecture ensures outstanding chemical and electrochemical resilience throughout prolonged charge and discharge cycling.
Developed to meet the rigorous demands of commercial battery production and pilot-line research, this binder formulation accommodates a broad variety of active chemistries, including high-capacity graphite, silicon-carbon composites, lithium iron phosphate (LFP), and ternary nickel-cobalt-manganese (NCM) systems. The aqueous system eliminates costly solvent recovery infrastructure while substantially reducing the carbon footprint of electrode fabrication, providing battery cell producers with a sustainable and economically efficient slurry preparation workflow.
Engineered with an optimized balance of polar nitrile functional groups and elastic copolymer segments, this emulsion maintains superior thermal resistance and electrochemical stability under extreme operating potentials. The product ensures uniform active particle dispersion, suppresses microstructural degradation during volume changes, and prevents electrode peeling or delamination under demanding operational environments.
Key Features
- Robust Electrochemical Stability: Operates reliably across broad voltage windows without undergoing premature anodic oxidation or cathodic reduction, preserving cell longevity in high-voltage and high-energy-density cell architectures.
- Exceptional Binding and Interfacial Adhesion: Formulated with high-density functional groups that create strong mechanical and chemical bonds between active materials, conductive additives, and metallic current collectors (copper and aluminum foil).
- Optimized Sub-Micron Particle Sizing: Tight particle size distribution ensures thorough nanoscale penetration and uniform coverage across active particles, maximizing electrical conductivity and network cohesion.
- Controlled Viscosity Profile: High-viscosity formulations provide outstanding shear-thinning behavior and dispersion stability, preventing agglomeration and sedimentation during slurry storage and high-speed coating.
- Thermal Degradation Resistance: Retains molecular integrity and adhesive strength at elevated temperatures, resisting structural breakdown during drying, calendering, and cell thermal stress events.
- Coating Defect and Curling Prevention: Formulated to mitigate internal drying stresses, reducing the risk of edge curling, surface cracking, and coating embrittlement when combined with recommended processing aids.
- Eco-Friendly Water Dispersion: Utilizes water as the primary dispersion medium, eliminating hazardous organic solvent emissions, lowering regulatory compliance overhead, and minimizing energy expenditure during electrode drying.
- Broad Chemical Compatibility: Demonstrates seamless miscibility with standard polar organic additives such as propylene carbonate and ethylene carbonate to tailor coating flexibility.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Lithium Iron Phosphate (LFP) Cathodes | Aqueous binder integration for LFP active materials with elevated binder ratios (1.5%–4.0%+) to accommodate high specific surface areas. | Enhances active material retention on aluminum foil, improves cathode flexibility, and lowers production costs by replacing NMP. |
| Silicon-Carbon Composite Anodes | High-elasticity slurry binding designed to buffer severe volumetric expansion and contraction during continuous lithiation/delithiation. | Prevents electrode pulverization, mitigates particle isolation, and maintains stable electrical pathways for extended cycle life. |
| Graphite Anode Formulations | Standard aqueous slurry preparation for natural and synthetic graphite anodes utilizing 2.0%–5.0% binder dosage by active weight. | Delivers uniform active mass loading, minimal binder migration during drying, and superior high-rate discharge performance. |
| Ternary (NCM / NCA) Cathodes | Specialized aqueous processing for nickel-rich layered oxide cathode materials in advanced energy storage applications. | Provides high-voltage oxidation resistance and stable interfacial charge transfer impedance across deep cycling routines. |
| Ultra-Thick High-Energy Electrodes | Formulation of high-areal-capacity electrodes for grid storage and heavy-duty electric vehicle battery cells. | Eliminates drying-induced film cracking and ensures continuous adhesive anchoring throughout the cross-section of thick electrode films. |
| Flexible Pouch Cell Electrodes | Slurry preparation enhanced with plasticizing additives to increase electrode bendability and mechanical compliance. | Eliminates edge fracture during winding and z-stacking processes, ensuring pristine electrode geometry prior to pouch packaging. |
Technical Specifications
| Specification Parameter | FZ31-132 Variant | FZ31-133 Variant |
|---|---|---|
| Product Identifier | FZ31-132 | FZ31-133 |
| Chemical Composition | Acrylonitrile Multi-Copolymer | Acrylonitrile Multi-Copolymer |
| Physical Appearance | Milky white to slightly yellowish aqueous emulsion | Milky white to slightly yellowish aqueous emulsion |
| Solid Content (%) | 15.0 ± 0.2 % | 15.0 ± 0.2 % |
| Dynamic Viscosity (mPa·s at 40°C) | ≥ 4800 mPa·s | 7300 – 9300 mPa·s |
| Median Particle Size D50 (μm) | ≤ 1.2 μm | ≤ 1.0 μm |
| pH Value | 7.0 – 9.0 | 7.0 – 9.0 |
| Target Application Polarity | Anode and Cathode Electrodes | Anode and Cathode Electrodes |
| Recommended Anode Dosage | 2.0 % – 5.0 % (by active solid weight) | 2.0 % – 5.0 % (by active solid weight) |
| Recommended Cathode Dosage | 1.5 % – 4.0 % (higher for LFP active solids) | 1.5 % – 4.0 % (higher for LFP active solids) |
| Recommended Processing Additive | ~5 % PC or EC relative to total solvent | ~5 % PC or EC relative to total solvent |
| Maximum Single-Sided Coating Temp | ≤ 80 °C | ≤ 80 °C |
| Pre-Mixing Viscosity Management | Dilute with deionized/distilled water under slow agitation | Dilute with deionized/distilled water under slow agitation |
| Viscosity Shelf-Life Behavior | Moderate natural increase during storage (nominal) | Moderate natural increase during storage (nominal) |
Why Choose This Product
- Consistent Quality and Batch Uniformity: Manufactured under stringent polymer synthesis controls to guarantee tight solid content (15 ± 0.2%) and uniform rheological performance, eliminating slurry batch variability in commercial coating operations.
- Engineering-Grade Film Mechanics: Provides a tailored combination of tensile strength and mechanical flexibility, preventing micro-fracturing and delamination during high-speed roll-to-roll calendering and slitting.
- Validated Processing Guidelines: Accompanied by optimized slurry preparation protocols—including precise deionized water dilution methods and temperature limits (≤ 80°C)—to guarantee defect-free, homogeneous electrode coatings.
- Comprehensive Battery Ecosystem Compatibility: Integrates seamlessly into modern automated mixing systems, continuous extrusion lines, and precision doctor blade or slot-die coating equipment.
- Dedicated Technical Support: Backed by experienced electrochemical process engineers capable of providing guidance on rheology modification, solvent addition strategies, and electrode drying profile optimization.
Contact our technical sales team today to request a quote, technical data sheet, or sample formulation tailored to your battery manufacturing requirements.
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