In high-energy-density lithium-ion batteries, the binder plays a crucial role in determining electrode conductivity, structural stability, and cycling life.
Among the top-performing PVDF binder systems available today, Arkema’s Kynar® HSV900 and KYNAR FLEX® 2801-00 stand out as the two benchmark materials—representing the dual directions of rigid structural stability and flexible copolymer modification.
Kynar® HSV900 is a high-purity polyvinylidene fluoride (PVDF) powder binder developed by Arkema specifically for high-nickel cathodes and silicon–carbon anodes.
It offers excellent solubility, adhesion, and electrochemical stability, making it ideal for advanced electrode fabrication.
💡 High adhesion with low loading: Strong electrode bonding allows for reduced binder content.
🔥 Fast dissolving and easy processing: Quickly dissolves in NMP, suitable for high-speed coating lines.
⚡ Low impedance, high stability: Minimal impedance growth during cycling; compatible with high-voltage systems.
🌡 Superior thermal and chemical stability: Maintains performance under harsh, high-temperature, and high-voltage conditions.
KYNAR FLEX® 2801-00 is a copolymer of PVDF and hexafluoropropylene (HFP), combining excellent flexibility, corrosion resistance, and thermal stability.
It is widely used in electrode binders, separator coatings, and functional polymer films, and also serves as a polyolefin processing aid (PPA).
🔸 High flexibility: Elongation at break >50%, retains ductility even at low temperature.
🔸 Strong chemical resistance: Stable under strong acid, alkali, and extreme pH environments.
🔸 High decomposition temperature: Up to 410 °C in N₂ atmosphere.
🔸 Excellent insulation: Stable dielectric constant, surface resistivity up to 10¹¹ Ω.
🔸 Outstanding flame resistance: LOI 42%, UL V-0 fire rating.
| Category | Test Parameter | Unit | Kynar® HSV900 | KYNAR FLEX® 2801-00 | Test Standard |
|---|---|---|---|---|---|
| General Info | Type | — | PVDF Homopolymer | PVDF-HFP Copolymer | — |
| Physical Properties | Density | g/cm³ | 1.77–1.79 | 1.77–1.80 | ISO 1183 |
| Average Particle Size D₅₀ | μm | 10 | 10 | GB/T 19077 | |
| Moisture Absorption | % | <0.1 | 0.03 | GB/T 6283 / ISO 62 | |
| Thermal Properties | Melting Point | °C | 165 | 143 | ASTM D3418 / ISO 11357 |
| Decomposition Temp (N₂) | °C | 390 | 410 | TGA | |
| Oxygen Index (LOI) | % | 44 | 42 | ASTM D2863 | |
| Mechanical Properties | Tensile Strength | MPa | — | 20–34.5 | ASTM D638 |
| Elongation at Break | % | — | >50 | ISO 527 | |
| Electrical Properties | Dielectric Constant (1 MHz) | — | — | 7 | IEC 60250 |
| Surface Resistivity | Ω | — | ≥5.1×10¹¹ | ASTM D257 | |
| Processing Properties | Melt Viscosity (230 °C, 100 s⁻¹) | kPo | 50 | — | ASTM D3835 |
| Solution Viscosity (5% PVDF, 10 s⁻¹) | cPo | 510 | — | — | |
| Compatibility | Compatible Systems | — | NCM/NCA, LFP, Si–C | PVDF, LLDPE, EVA blends | — |
| Application Area | HSV900 | 2801-00 |
|---|---|---|
| High-Ni Cathodes | ✅ | ✅ |
| LFP Cathodes | ✅ | ✅ |
| Graphite Anodes | ✅ | ✅ |
| Si–C Anodes | ✅ | ✅ |
| Separator Coatings | — | ✅ |
| High-Voltage Systems | ✅ | ✅ |
| Specification | Packaging Type | Description |
|---|---|---|
| 1 g / 10 g / 50 g / 100 g / 200 g / 500 g / 1 kg | Bottle or Pouch | Suitable for lab and pilot testing |
| 20 kg Industrial Pack | Original Paper Bag | Ideal for production and scale-up |
Documents Provided: TDS / COA / MSDS
Product Form: White powder
Availability: Regular stock
Invoice: 13% VAT invoice available
Manufacturer: Arkema France
Brand: Kynar® / KYNAR FLEX® Series
Email: contact@scimaterials.cn
WeChat: SCI-Materials-Hub
Support: Technical consultation, material selection, and formulation optimization
Kynar® HSV900 provides robust adhesion and electrochemical stability, making it the binder of choice for high-energy cathode and anode formulations.
KYNAR FLEX® 2801-00, with its superior flexibility and chemical resistance, excels in composite coatings and next-generation battery systems.
When used together, they create an ideal balance between mechanical strength, interface stability, and cycling durability,
supporting the evolution of the next generation of high-energy-density batteries.
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