HNBR (Hydrogenated Nitrile Butadiene Rubber) as Battery Electrode Binder, 100 g/bottle, CBEBHNBR
Use your own shipping account?
We support FedEx, UPS, and DHL third-party billing for institutional customers.
Place your order first, then email shipping@echemsupplies.com with your account details and order number. We'll generate the label using your account and refund your shipping charges, less a handling fee.
Add-Ons
Hydrogenated Nitrile Butadiene Rubber (HNBR) is a high-performance elastomeric binder used in lithium-ion batteries, particularly in electric vehicle (EV) and high-capacity ternary batteries (NMC/NCA). HNBR is engineered to provide superior mechanical flexibility and interfacial adhesion, preventing the electrode from cracking or peeling during the physical stress of charging and discharging.
NBR acts as a "structural rubber" that holds active material and conductive agents together. (1) HNBR maintains a stable electrode structure even under high-rate charging. Its low swelling in electrolytes ensures that ion and electron pathways remain open, improving the battery's longevity. (2) Unlike brittle binders, HNBR is highly elastic. This makes it a primary candidate for silicon-based anodes and high-nickel cathodes, which expand and contract significantly during use. (3) In solid-state research, HNBR is valued because it resists chemical reactions with sulfide-based solid electrolytes, where standard nitrile rubber (NBR) would harden and fail.
| Part Number |
CBEBHNBR (C-BEB-HNBR) |
| CAS |
308068-83-9 |
| Chemical Formula/Structure |
 |
| Appearance |
Brown powder |
| Package Size | 50 g, 100 g, and 200 g/bottle |
| Use Note |
(1) Prepare the HNBR Stock Solution: Dissolve HNBR powder or pellets in a compatible polar solvent—most commonly NMP (N-Methyl-2-pyrrolidone), or alternative organic solvents like cyclopentanone depending on the specific grade. Target a 5–10 wt% stock solution to keep viscosity manageable. Stir continuously using a magnetic or mechanical stirrer at 50–60°C for 4 to 8 hours until the solution is completely clear and free of undissolved gel particles. (2) Pre-blend Solid Powders: Dry-mix the powders using a planetary centrifugal mixer or mortar to distribute the conductive additive evenly throughout the active material prior to wetting. (3) High-Solids Paste Mixing: (i) Transfer the dry powder mixture into a planetary centrifugal mixer or high-shear disperser. (ii) Add approximately 60–70% of the calculated HNBR stock solution. (iii) Mix at high speed (e.g., 1,500–2,000 RPM) for 10–15 minutes. Mixing at a high solid-to-liquid ratio ensures maximum shear force, breaking up conductive carbon clusters and ensuring uniform HNBR coating onto the particle surfaces. (4) Dilution and Viscosity Adjustment: (i) Add the remaining HNBR stock solution and small increments of pure solvent. (ii) Mix at moderate speed for 10–20 minutes to achieve a homogeneous, smooth slurry. (iii) Target a viscosity suitable for your coating method (typically 2,000 to 5,000 mPa·s for doctor blade casting). |
Notes: Please try to store the HNBR powder in a dry place (glovebox is the best option).
References:
- N. Verdier, et al. Polyacrylonitrile-based rubber (HNBR) as a new potential elastomeric binder for lithium-ion battery electrodes, J. Power Source, 2019, 440, 227111.
- Y. Duan, et al. PAA/HNBR composite Binder: A sustainable fluorine-free binder Strategy for high-rate and Durable LiFePO4 cathodes, J. Power Sources, 2026, 665, 239006.