Equipment & materials
CMC Thickener (Sodium Carboxymethyl Cellulose)
Battery-grade CMC with a c…
ExploreMaterials / grade-specific review
SBR Binder Emulsion
Aqueous styrene-butadiene rubber dispersion for graphite anodes — flexible, low-Tg and compatible with CMC thickening.
APPLICATION & GRADE
Grade / designation: SZ-M1-BD02
Grade and specification to be confirmed
Discuss Material Requirements ↗Typical applications
Graphite anode, water-based processing
Silicon-graphite blend anodes
Flexible electrode development
Replacement for solvent-based anode binders
Grade & supply review
Molecular weight and solution viscosity
Solids content and pH
Particle size for emulsion grades
Supply form — powder, NMP solution or aqueous dispersion
Representative image. Actual material appearance varies by grade and lot — request a current photograph or sample.
01 / OVERVIEW
About this material
SBR gives an electrode its elasticity. A graphite anode expands and contracts by 4–6% during cycling, and a rigid binder cracks under that strain; a rubbery one stretches. The low glass transition temperature is what makes the difference, and it is specified per lot.
SBR is never used alone. CMC thickens the slurry and anchors the binder to the copper foil, while SBR provides the cohesion. The usual ratio is 1.5–3% SBR with 1–2% CMC, added as the last step to avoid shear-induced coagulation.
04 / QUALITY & HANDLING
Documentation, controls and care
Quality controls
- Certificate of analysis per batch
- Moisture by Karl Fischer, reported per lot
- Trace metal screening
- Retained samples held for 12 months
Handling & storage
- Store between 5 and 25 °C; freezing coagulates the emulsion irreversibly.
- Stir gently before use — do not high-shear mix the neat emulsion.
- Add as the final component after CMC and active material are dispersed.
Grades on this page are references used to describe capability; they are not a fixed product list.
Specification values are typical windows compiled from public technical references and supplier
datasheets, and are provided for selection guidance only. The specification delivered against your
order is agreed in writing, and measured values are confirmed on the batch certificate of analysis.
Materials listed here may be hazardous; they must be handled by qualified personnel under applicable
regulations.
Material specifications
| Chemistry | Styrene-butadiene copolymer emulsion |
|---|---|
| Solids content | 40–48 wt% |
| Viscosity | 50–200 mPa·s at 25 °C |
| Glass transition (Tg) | −10 to 5 °C |
| Particle size | 100–150 nm |
| pH | 6–8 |
| Styrene content | ≈30 wt% |
| Mechanical stability | Passes 10 min high-shear test |
| Recommended dosage | 1.5–3 wt% (dry basis) |
| Shelf life | 6 months at 5–25 °C, do not freeze |
Grade & packaging options
Custom particle size or purity windows
Pilot and production quantities
Technical review call with our materials team
Supply boundaries
Reference grade, not a fixed catalogue item. Capacity, particle size, coating, purity and packaging are set to the specification your process needs — the delivered grade may differ from the values shown here.
Packaging & handling
Laboratory pack | 100 g / 500 g foil-lined pouch
Pilot pack | 1 kg / 5 kg sealed container
Production pack | 25 kg fibre drum, inner PE liner
Information for material review
Cell chemistry, format and voltage window
Target capacity, areal loading or formulation
Process route — NMP/PVDF, aqueous, or dry
Quantity per lot, packing and delivery schedule
Training in China
Training at our China facility is available for this product. Scope, schedule and language are agreed for each project.
Related products
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Discuss your material specification.
Share the intended use, required grade, quantity and supporting documents you need to review.
support@szotech.comPlease contact us by email to discuss your project. support@szotech.com