High-Performance Copper Foil Rolls for Lithium Ion Battery, Size: 10 µm

Technical Specification:

1. Material Composition:
   • Material: High-purity Copper (Cu).
     • Purity: ≥99.9%, ensuring optimal electrical conductivity and minimal impurities.
2. Physical Dimensions:
   • Thickness: 10 µm.
     • Thin yet robust, providing high performance in lightweight and compact designs.
   • Width: Customizable to application requirements (commonly 50–500 mm for battery production).
   • Roll Length: Variable, typically 500–1000 meters per roll, based on manufacturing needs.
3. Mechanical Properties:
   • Tensile Strength: High mechanical integrity to resist tearing during assembly.
   • Ductility: Excellent flexibility for easy integration into cylindrical, prismatic, and pouch cell designs.
4. Thermal and Electrical Properties:
   • Electrical Conductivity:
     • Superior performance for efficient current collection and distribution.
   • Thermal Conductivity:
     • Excellent heat dissipation, reducing thermal hotspots in high-power applications.
5. Surface Treatment:
   • Options include double-sided roughening, coating, or electroplating for enhanced adhesion with active materials (e.g., graphite or silicon-based anodes).
6. Chemical Properties:
   • Corrosion Resistance:
     • May feature anti-oxidation coatings or surface treatments to ensure stability in battery environments.
7. Packaging:
   • Delivered in tightly wound rolls with protective wrapping to prevent surface contamination or mechanical damage.

Applications:

1. Primary Applications:
   • Current Collector for Lithium-Ion Batteries:
     • Acts as the substrate for the anode, supporting active material coatings and facilitating electron flow.
2. Industries:
   • Battery Manufacturing:
     • Essential in producing lithium-ion cells for consumer electronics, electric vehicles, and energy storage systems.
   • Energy Storage Systems (ESS):
     • Integral in grid-scale and renewable energy storage technologies.
   • Electric Vehicles (EVs):
     • Used in high-performance battery packs for lightweight and energy-dense configurations.
3. Advantages for Applications:
   • Ultra-Thin Design:
     • Reduces weight and increases energy density by maximizing active material loading.
   • High Conductivity:
     • Minimizes energy losses, improving overall battery efficiency.
   • Flexible and Durable:
     • Suitable for diverse cell geometries and high-speed manufacturing processes.
   • Thermal Stability:
     • Handles heat generated during high-current charging and discharging.
4. Specialized Uses:
   • Advanced Battery Technologies:
     • Supports innovations in silicon-based anodes and solid-state batteries.
   • High-Power Applications:
     • Ideal for batteries requiring rapid charge and discharge cycles.
   • Experimental Prototyping:
     • Used in R&D for testing novel anode materials and configurations.
5. Challenges and Mitigation:
   • Oxidation Risk:
     • Copper can oxidize, reducing conductivity.
       • Solution: Use anti-oxidation treatments or handle in controlled environments.
   • Thinness Handling:
     • Ultra-thin foil is prone to tearing or deformation during processing.
       • Solution: Employ precision handling equipment and ensure proper tension control.
   • Adhesion with Active Materials:
     • Poor adhesion can lead to delamination.
       • Solution: Use treated or coated copper foil with optimized surface roughness.

Summary:

High-Performance Copper Foil Rolls with a thickness of 10 µm are critical components for lithium-ion battery manufacturing. Their exceptional electrical conductivity, thermal stability, and lightweight properties make them ideal as anode current collectors in energy-dense and high-performance battery designs. These foils support innovations in electric vehicles, consumer electronics, and renewable energy storage systems, ensuring reliability and efficiency in cutting-edge energy storage technologies.