Products Description
Conductive Coating for Battery Current Collectors
Overview:
Conductive coating is a significant technological advancement in the surface treatment of battery current collectors. It involves the application of nano-scale conductive materials—such as graphite and carbon-coated particles—onto aluminum or copper foil to create a fine, uniform layer. This process enhances static electrical conductivity, greatly improves microcurrent collection from active materials, and significantly reduces the contact resistance between the active material and the collector. Additionally, the coating enhances adhesion, allowing for reduced binder usage and improving the overall performance of lithium-ion batteries.
Types of Coating:
Water-Based Coating (Aqueous System): Environmentally friendly and compliant with green manufacturing requirements.
Oil-Based Coating (Solvent System): Offers better coating uniformity and is suitable for high-precision applications.
Key Benefits:
Suppresses Cell Polarization
Minimizes heat generation during high-rate charging/discharging
Improves rate capability and thermal stability
Reduces Internal Resistance
Slows down the increase in dynamic resistance over multiple cycles
Enhances energy efficiency
Improves Cell Consistency and Cycle Life
Ensures stable electrochemical performance
Extends battery lifespan across batches
Enhances Adhesion of Active Materials
Strengthens bonding with current collectors
Lowers electrode manufacturing costs by reducing binder usage
Protects Current Collector from Electrolyte Corrosion
Increases chemical resistance, prolonging the life of the current collector
Optimizes Processing of Specialized Cathode Materials
Improves slurry uniformity and coating performance for lithium iron phosphate (LFP) and lithium titanate (LTO)
Technical Parameters
| Coating thickness (Double side) A: 4~6um B: 2~3um | ||
| Item | Test data | Test method |
| Aluminum foil thickness | 12~30um | Micrometer |
| Color | Black / gray | eye survey |
| Conductive coating single surface density(g/㎡/ side) | 0.5-2.0 g/㎡ | weighing method |
