Toynol® ET-205 Wetting Dispersant for Conductive Systems
Toynol® ET-205 Wetting and Dispersing Agent for Waterborne Conductive Systems
Abstract
Toynol® ET-205 is a high-efficiency wetting and dispersing agent developed to solve the dispersion stability problems of conductive materials (such as conductive carbon black, carbon nanotubes, and graphene) and lithium battery anode slurries in waterborne systems. Its chemical description is an aminoalkyl hydroxyl adduct of styrene-maleic anhydride copolymer. Its core functions are significantly reducing system viscosity, shortening conductive agent dispersion time, and improving electrochemical stability (0.1 V-4.8 V vs. Li/Li). Compared with conventional approaches, it is APEO-free and compatible with a variety of nanoscale conductive materials, making it a suitable option for new energy and electronic materials such as high-performance lithium-ion battery anode slurries and waterborne conductive coatings.
Core Product Information
| Item | Specification |
|---|---|
| Model | ET-205 |
| Chemical Description | Aminoalkyl hydroxyl adduct of styrene-maleic anhydride copolymer |
| Appearance (25 °C) | Yellow translucent liquid |
| Non-volatile content (%) | 40% |
| Solvent | Water |
Key Performance Indicators
| Performance | Value |
|---|---|
| Electrochemical window (vs. Li/Li) | 0.1 V-4.8 V |
| Viscosity control effect | Significantly reduces the viscosity of high-solids conductive slurry, improving coating processability |
| Dispersion stability | Prevents conductive material settling and agglomeration, ensuring long-term slurry storage stability |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency viscosity reduction and dispersion: Rapidly wets conductive materials, shortens dispersion time, and improves production efficiency.
- Electrochemical compatibility: The wide electrochemical window ensures stable operation in lithium battery systems without interfering with electrode reactions.
- Broad-spectrum applicability: Suitable for various nanoscale conductive materials such as conductive carbon black, carbon nanotubes, and graphene.
- Environmentally friendly: Waterborne formulation, APEO-free, compliant with green energy material environmental requirements.
Recommended Application Fields
- Lithium-ion battery anode slurry: Used for waterborne dispersion of anode active materials such as graphite and silicon-carbon, and conductive agents (such as carbon black and CNTs), improving slurry uniformity and coating quality; suitable for the manufacturing of high-performance lithium batteries such as power batteries and energy storage batteries.
- Waterborne conductive coatings: Disperses conductive fillers in electromagnetic shielding coatings and antistatic floor coatings, ensuring coating conductivity uniformity and meeting the needs of electronics plants, medical cleanrooms, and other settings.
- Printed electronics materials: Used in the preparation of waterborne conductive inks for flexible circuits, RFID antennas, and others, optimizing printability and circuit conductivity reliability.
- New energy device electrodes: Provides dispersion support in supercapacitor and fuel cell electrode slurries, ensuring electrode material performance consistency.
Usage and Recommended Dosage
Addition sequence: For optimum performance, the ET-205 dispersant must be added to water first and fully dissolved before adding the conductive material or active material for grinding dispersion.
Synergistic optimization:
- No separate wetting agent needed.
- A Toynol® defoamer can be combined to quickly eliminate grinding foam (recommended dosage 0.1%-0.5%).
Recommended dosage (calculated on dispersant solids):
- Conductive agent dispersion (carbon black, CNTs, etc.): 15%-50% of the conductive agent weight.
- Anode active material dispersion (graphite, silicon-carbon, etc.): 0.5%-3.0% of the active material weight.
Experimental tip: The optimum dosage should be determined through dosage screening; it is recommended to start from the midpoint.
Safety and Storage
- Safety precautions: Wear safety goggles and gloves during handling. If the product contacts the skin, rinse immediately with water; if it enters the eyes, rinse with plenty of water and seek medical attention.
- Storage conditions: Store sealed in a cool, well-ventilated, dry place, away from heat, sparks and open flames. Avoid high temperatures and freezing.
- Packaging: 25 kg drums, 200 kg drums.
- Shelf life: Under proper storage conditions, the shelf life is 24 months from the date of manufacture.
Frequently Asked Questions
Q: How well does ET-205 disperse carbon nanotubes (CNTs)? Is a special process required?
A: ET-205 has excellent dispersion performance on carbon nanotubes, and its molecular structure can effectively debundle CNT agglomerates. High-speed shear or bead milling (≥2000 r/min) is recommended, combined with dosage screening (recommended starting from 30%) to optimize dispersion efficiency.
Q: In lithium battery anode slurry, will ET-205 affect electrode bonding performance or cycle life?
A: No. ET-205 is electrochemically stable within 0.1 V-4.8 V (vs. Li/Li) and highly compatible with common binders (such as CMC and SBR). At the correct dosage, it improves slurry uniformity and actually contributes to electrode interface stability and cycle life.
Q: Can this product be used to prepare waterborne graphene conductive coatings?
A: Yes. ET-205 has good wetting and steric hindrance effects on graphene sheets, effectively preventing restacking, and is suitable for dispersing waterborne graphene coatings and inks. The recommended dosage range is 20%-40% (based on graphene weight), with dispersion verified by AFM or conductivity testing.
Q: If the system already contains other surfactants, will adding ET-205 cause compatibility problems?
A: ET-205 is compatible with most anionic/nonionic surfactants, but a small-scale compatibility test is recommended beforehand. In terms of addition sequence, ET-205 should be added first to ensure it fully adsorbs onto the conductive material surface before introducing other additives.
Contact Us
- If you need free samples, a detailed Technical Data Sheet (TDS), or a Safety Data Sheet (SDS), or if you have any technical questions, please contact us at any time:
- Company: Tianjin Hi-Perferal Advanced Materials Co., Ltd.
- Address: No. 2-1, Zhenghua Road, Caozili, Wuqing District, Tianjin
- Technical service hotline: 022-82910362
- Website: www.surfychem.com