Battery Binders
Targray supplies battery-grade binders that improve electrode adhesion, slurry stability, and long-term cell performance.
Our portfolio supports graphite and silicon-based anodes across EV, ESS, and advanced lithium-ion applications.
Why Battery Binders Matter
Binders maintain cohesion between active materials and the current collector during cycling. The right binder system supports:
- Strong electrode adhesion
- Stable slurry processing
- Consistent coating quality
- Long-term capacity retention
SBR (Styrene-Butadiene Rubber) Binders
Overview
SBR binders are the industry standard for graphite anodes and low-to-medium silicon systems. They offer strong adhesion, good flexibility, and excellent slurry processability.
Key Benefits
- High adhesion to copper and active materials
- Good slurry homogeneity and wettability
- Mechanical flexibility for cycling stability
- Compatible with water-based processing
Typical Use
Commonly used alongside CMC as a thickener in graphite anode formulations.
Available Grades
- PSBR420 – High adhesion, low resistance
- PSBR422 – Optimized for low-temperature performance
CMC (Carboxymethyl Cellulose) Binders
Overview
CMC is typically used as a co-binder or thickener in combination with SBR or PAA systems. It plays a critical role in slurry rheology and electrode structure.
Key Benefits
- Controls slurry viscosity and stability
- Improves dispersion of active materials
- Enhances coating uniformity
- Contributes to electrode mechanical strength
Typical Use
- Paired with SBR in graphite anodes
- Combined with PAA in silicon-rich systems to balance flexibility and viscosity
Available Grades
- PCMC14 – Enhances fast charging abilities
- PCMC10 – Enhanced dispersion
PAA (Polyacrylic Acid) Binders
Overview
PAA binders are designed for high-silicon anodes, where significant volume expansion requires stronger chemical bonding and structural integrity.
Key Benefits
- Strong binding to silicon particles
- Helps manage volume expansion (up to ~300%)
- Improves cycle life in silicon-rich electrodes
Typical Use
- High-silicon or next-generation anode formulations
- Often combined with CMC to balance hardness and flexibility
Available Grades
- SPAATM – Better C rate performance
- SPAATR – Higher expansion suppression
Learn More About our Battery-grade Binder Supply Solutions
As a global leader in battery materials, Targray provides high-performance binder chemistries, global sourcing and supply chain reliability, technical support for formulation and scale-up, and solutions tailored to EV and energy storage applications and next generation chemistries.
Contact our battery materials team today to discuss binder selection, formulation support, and qualification for your lithium-ion manufacturing program.
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