What is PVDF Binder for Li-ion Battery Electrodes?

Polyvinylidene Fluoride (PVDF) Binder is a high-performance polymer used as a binding agent in lithium-ion battery (Li-ion) electrodes. It is widely preferred for its excellent electrochemical stability, strong adhesion, chemical resistance, and flexibility in battery applications.

Chemical Properties and CAS Number

• Material: Polyvinylidene Fluoride (PVDF)
• CAS Number: 24937-79-9
• Molecular Formula: (C2H2F2)n
• Density: ~1.78 g/cm³
• Melting Point: 177°C – 180°C
• Solubility: Soluble in N-Methyl-2-Pyrrolidone (NMP)
• Electrical Resistivity: High resistivity, non-conductive
• Appearance: White powder or pellet form

Applications of PVDF Binder in Li-ion Batteries

1. Cathode & Anode Binder in Li-ion Batteries

• Used in both cathode (NMC, LFP, NCA) and anode (graphite, Si/C composites).
• Provides strong adhesion between active material and current collector.
• Enhances battery cycle life and structural integrity.

2. High-Energy-Density Battery Systems

• Essential in next-generation Li-ion batteries.
• Improves battery performance at high voltages.
• Used in high-capacity and long-cycle-life batteries.

3. Supercapacitor Binder

• Applied in carbon-based electrodes for supercapacitors.
• Enhances electrode flexibility and structural durability.
• Works well in aqueous and organic electrolyte systems.

4. Solid-State and Flexible Batteries

• Enables mechanical flexibility in flexible batteries.
• Compatible with solid-state electrolyte systems.
• Used in wearable and foldable energy storage devices.

Pricing of PVDF Binder for Li-ion Battery Electrodes

Pricing varies based on purity, molecular weight, and order volume:

• Lab-Scale Orders: $50 – $300 per kg
• Industrial-Scale Orders: $500 – $3,000 per batch
• Bulk Orders: Custom pricing available

Factors Influencing Pricing

• Purity Level (99% – 99.99%)
• Molecular Weight (High/Low MW PVDF)
• Solvent Compatibility (NMP solubility, water-based PVDF)
• Custom Additives or Functionalization
• Bulk Order Discounts & Shipping Costs

Conclusion

PVDF Binder is a key material in Li-ion battery production, offering excellent adhesion, high chemical resistance, and superior electrochemical stability. Its flexibility and compatibility with various electrode materials make it a critical component in next-generation energy storage systems.