Polyvinylidene Fluoride(PVDF)-900

Name: Arkema KYNAR® HSV 900 High-Viscosity PVDF Cathode Binder for Lithium-Ion Batteries

Manufacturer: Arkema (France/USA)

Brand: KYNAR®

Model: KYNAR® HSV 900

Product Code: XN-BD-PVDF900

Description:

Arkema KYNAR® HSV 900 is a premium high-viscosity polyvinylidene fluoride (PVDF) homopolymer engineered as a workhorse cathode binder for lithium-ion battery production lines worldwide. Manufactured by Arkema under the globally recognized KYNAR® fluoropolymer brand via emulsion polymerization, HSV 900 (High Specific Viscosity 900) is the industry-standard choice for NCM, NCA, LCO, and LFP cathode formulations where binding strength, electrochemical stability, and processing consistency are critical. As a result, this binder is specified by leading cell manufacturers in consumer electronics, EV battery, and energy storage applications. The defining performance characteristics of KYNAR® HSV 900 include ultra-high melt viscosity (4,450–5,450 Pa·s at 230 °C / 100 sec⁻¹), stable performance across cathode operating voltages, excellent batch-to-batch consistency, and reliable processing in NMP-based slurry formulations. Furthermore, the high molecular weight enables effective binding at reduced binder loading (typical 2–4 wt%), leaving more of the electrode mass available for active material — directly improving cell-level energy density. KYNAR® HSV 900 is supplied as a fine white powder with specific gravity 1.77–1.79, melting temperature 162–172 °C, tensile yield strength 40–55 MPa, and Shore D hardness 76–80. Available in 1 kg packaging.

Application:

Arkema KYNAR® HSV 900 is designed for high-performance lithium-ion battery cathode slurry preparation, including NCM (NCM 622, NCM 811) cathode formulations for high-energy-density lithium-ion cells, NCA (Ni-Co-Al) cathode formulations, lithium cobalt oxide (LCO) cathode formulations for consumer electronics applications, lithium iron phosphate (LFP) cathode formulations for EV and energy storage applications using NMP-based coating, lithium manganese oxide (LMO) cathode formulations, separator coating applications where PVDF serves as the binder for ceramic-coated separators, and academic research into cathode binder system optimization for next-generation lithium-ion cells.

Physical & Mechanical Properties:

Values measured by Arkema. Typical values for reference; not guaranteed unless otherwise specified.

Other Properties:

KYNAR® HSV 900 vs Solef 5130: Choose by Brand and Process Preference

Choose KYNAR® HSV 900 for reliable mainstream cathode production with established Arkema brand quality. Choose Solef 5130 for high-end research or applications requiring suspension-polymerized PVDF with the lowest impurity profile.

Characteristics:

Ultra-high melt viscosity (4,450–5,450 Pa·s) for superior binding

KYNAR® HSV 900’s ultra-high melt viscosity of 4,450–5,450 Pa·s at 230 °C / 100 sec⁻¹ reflects its high molecular weight — delivering superior binding force per unit binder mass. As a result, this grade enables effective electrode adhesion at reduced binder loadings (typical 2–4 wt% on dry basis), increasing the active-material fraction in the electrode and improving cell-level energy density.

Emulsion-polymerized for consistent processing

KYNAR® HSV 900 is produced via emulsion polymerization — the established Arkema manufacturing process delivering consistent batch-to-batch molecular weight and processing behavior. Therefore, this binder integrates smoothly into existing high-volume cathode production lines without batch-driven slurry rheology variability.

Stable performance across cathode operating voltages

PVDF’s stable C-H/C-F bonded structure delivers reliable electrochemical stability across the full cathode operating voltage range — including high-voltage NCM 811, NCA, and LCO cathode systems. Consequently, KYNAR® HSV 900 maintains structural integrity and binding performance throughout extended cycling at elevated voltages where lower-quality PVDF binders may degrade.

Excellent mechanical properties for durable electrodes

KYNAR® HSV 900 delivers a comprehensive mechanical property profile — tensile yield strength 40–55 MPa, tensile break strength 34–43 MPa, flexural strength 48–62 MPa, compressive strength 68–103 MPa, and Shore D hardness 76–80. As a result, electrodes formulated with HSV 900 retain mechanical integrity through cell formation cycling, calendering, slitting, and stack assembly operations.

High thermal stability for safety

KYNAR® HSV 900 features a melting temperature of 162–172 °C — providing thermal stability throughout cell formation drying, accelerated aging tests, and elevated-temperature operating environments. Furthermore, the broad ductility range (50–250% elongation at break) accommodates electrode flexure during cylindrical cell winding and pouch cell stacking without binder-induced cracking.

NMP-soluble for industry-standard wet-coating processes

KYNAR® HSV 900 dissolves cleanly in N-methyl-2-pyrrolidone (NMP) — the industry-standard solvent for cathode slurry preparation. Therefore, this binder integrates seamlessly with existing cathode coating production lines, slurry mixing equipment, slot-die and comma-bar coaters, and NMP recovery systems used in lithium-ion battery manufacturing.

Industry-standard Arkema KYNAR® brand quality

Arkema is one of the largest global PVDF manufacturers, supplying KYNAR® branded battery binders to cell manufacturers worldwide. Consequently, KYNAR® HSV 900 delivers consistent batch-to-batch performance backed by Arkema’s quality control systems — supporting reliable scale-up from R&D laboratory experiments to industrial production of mainstream lithium-ion cells.

Established brand for production-line procurement

The KYNAR® brand is widely specified across the lithium-ion battery industry — KYNAR® HSV 900 is often pre-approved by cell manufacturers and EV OEMs through their qualified materials lists. Therefore, this binder simplifies sourcing and qualification compared to less-established PVDF brands, supporting faster time-to-production for new cell lines.

Recommended Use Procedure:

1. Pre-dissolve KYNAR® HSV 900 in NMP (N-methyl-2-pyrrolidone) before adding to slurry. Add PVDF powder slowly to vigorously stirred NMP at moderate temperature (40–60 °C accelerates dissolution); avoid forming clumps that resist dissolution. 2. Continue stirring for 4–8 hours until the PVDF is fully dissolved as a clear viscous solution (high-molecular-weight PVDF takes longer to dissolve than lower-grade PVDF). 3. Prepare cathode slurry following the standard PVDF cathode binder protocol — typical formulation: cathode active material (94–96 wt%, e.g., NCM 811, NCA, LFP), conductive additive (1–2 wt%, carbon black or CNT), KYNAR® HSV 900 (2–4 wt% on dry basis). 4. First mix the conductive additive with the pre-dissolved PVDF solution to disperse the carbon, then add the cathode active material, mixing under high-shear conditions to achieve homogeneous slurry. 5. Filter the final slurry through a fine-mesh filter to remove any aggregates. 6. Coat onto aluminum current collector foil using standard slot-die or comma-bar coaters. 7. Dry the coated electrode at recommended temperatures (typically 80–120 °C in two-zone drying ovens) to remove NMP solvent. 8. Roll-press to target porosity. 9. Reseal the PVDF container tightly between uses to minimize moisture absorption from ambient air.

Packaging & Storage:

Arkema KYNAR® HSV 900 is supplied in 1 kg packaging, sealed for shipment and storage. Therefore, store at room temperature in a dry and sealed environment. To maintain product quality, minimize exposure to air and use immediately after opening the package. PVDF powder is hygroscopic — moisture absorption from humid air will alter the moisture content and may affect dissolution behavior, slurry rheology, and final electrode quality. After opening, reseal the container tightly with desiccant if extended storage is required, or transfer to a controlled-humidity environment.

Safety:

For research and industrial laboratory use only. Always wear appropriate PPE (safety glasses, chemical-resistant gloves, lab coat) when handling PVDF binder, NMP solvent, or coated electrodes. NMP is a regulated chemical in many jurisdictions (REACH, OSHA) — handle in a fume hood and follow local regulations on solvent use. When PVDF resins are heated to temperatures above 380 °C, decomposition products are released — these decomposition products may include hydrogen fluoride (HF), which is highly toxic. Ovens, process equipment, and the working area must be adequately ventilated. Avoid prolonged inhalation of PVDF powder dust during weighing and slurry mixing operations. Do not store near oxidizers, strong acids, or strong bases. Refer to the Arkema Material Safety Data Sheet (MSDS) for complete safety and handling information.

Note: Specifications listed above are typical values provided by Arkema and are for reference only. Actual performance depends on the specific cathode active material, slurry formulation, NMP quality, coating process parameters, and downstream cell manufacturing conditions — consult published literature and Arkema technical bulletins for guidance on optimal PVDF binder formulation protocols for specific cathode chemistries (NCM, NCA, LCO, LFP, LMO). For researchers exploring complete lithium-ion battery binder workflows, see also Xnergy’s related products: Solvay Solef 5130 (premium suspension-polymerized PVDF), DAICEL CMC 2200 (CMC co-binder for water-based anode formulations), Nippon Paper MAC350HC, Nippon Paper MAC500HC, ZEON SBR BM-430B (water-based anode binder for graphite anodes), ZEON SBR BM-451B (water-based anode binder for Si-C/SiOₓ anodes), Daikin PTFE Dispersion Binder D-210C (PFOA-free PTFE for dry electrode manufacturing), PTFE Binder Powder, and the full Binders category. For complete electrode formulation systems, see also Cathode Materials (NCM, NCA, LFP, LCO), Anode Materials, Conductive Additives, and Current Collectors.