Wholesale Lithium Battery Pure Copper Strips Battery Grade Copper Foils
Premium Electrolytic Copper Foils – Ultra-Thin & High Purity Solutions
Discover our extensive range of high-quality electrolytic copper foils, specifically engineered to meet the stringent demands of modern electronic applications. From ultra-thin 4-micron sheets to versatile 6-micron and 8-micron options, our pure copper foils deliver exceptional electrical conductivity, superior thermal dissipation, and outstanding mechanical properties. Whether you require materials for advanced lithium-ion batteries, intricate flexible printed circuit boards (FPC), precise EMI/RFI shielding, or high-performance PCBs, our electrolytic copper foils are the ideal choice.
Key Features & Benefits:
- Ultra-High Purity Copper: Manufactured from pure copper (typically 99.9%+) to ensure optimal electrical and thermal performance.
- Precise Thickness Control: Available in ultra-thin gauges such as 4µm, 6µm, and 8µm, providing consistent and uniform thickness across the entire roll.
- Superior Conductivity: Excellent electrical conductivity makes it perfect for transmitting signals and power efficiently.
- Exceptional Flexibility & Ductility: Ideal for flexible circuits and applications requiring bending or forming without cracking.
- Smooth Surface (Single-Light/Single-Sided Foils): Our single-light electrolytic copper foils feature one side with a highly smooth, uniform surface, crucial for fine-line circuitry and optimal lamination.
- High Tensile Strength: Robust mechanical properties ensure durability and reliable processing.
- Excellent Adhesion Properties: Designed for optimal bonding with various substrates and laminates.
- Corrosion Resistance: Offers good resistance to oxidation and environmental factors, enhancing product lifespan.
- RoHS & REACH Compliant: Ensures environmental safety and regulatory compliance.
Common Applications:
- Lithium-ion Batteries: Anode current collectors in EV batteries, portable electronics, and energy storage systems. (Especially 4um, 6um copper foil)
- Flexible Printed Circuit Boards (FPC/Flex PCBs): Base material for flexible circuits used in smartphones, wearables, and medical devices.
- Printed Circuit Boards (PCBs): Essential component for multi-layer PCBs, contributing to signal integrity and heat management.
- EMI/RFI Shielding: Effective for electromagnetic interference and radio-frequency interference shielding in electronic devices.
- Transformers & Inductors: Used in winding applications for efficient power conversion.
- Heat Sinks & Heat Dissipation: Superior thermal conductivity makes it suitable for managing heat in electronic components.
- Connectors & Busbars: For various electrical interconnections.
- Capacitors: As electrodes in high-performance capacitors.
Technical Specifications (Typical Values – Please contact us for exact specifications based on your order):
| Parameter | Typical Value Range | Notes |
|---|---|---|
| Material | Pure Electrolytic Copper (Purple Copper) | Cu ≥ 99.9% |
| Thickness Options | 4 µm, 6 µm, 8 µm, 12 µm, 18 µm, 35 µm, 70 µm, etc. | Customizable to specific project requirements |
| Density | 8.94 g/cm³ | Standard copper density |
| Resistencia a la tracción | 200-450 MPa (Melted) / 250-550 MPa (Annealed) | Varies by temper and thickness |
| Elongation | 2% – 30% | Varies by temper and thickness; higher for annealed foil |
| Pureza | ≥ 99.9% (Oxygen-Free Copper) | Ultra-high purity for optimal performance |
| Surface Roughness | Rz < 3.0 µm (Single-Light/Matte side) | Crucial for adhesion and fine-line circuitry (for single-light foils) |
| Ancho | 10 mm – 1290 mm | Customizable slit widths available |
| Longitud | 100 m – 5000 m (or custom reel length) | Standard rolls or custom specified |
| Temper | Annealed (Soft), Hard | Soft temper for flexibility, hard temper for rigidity |
| Peel Strength | Varies by substrate | Critical for lamination processes (e.g., with PI film) |
| Estándar | IPC-4562, ASTM B683 | Industry standards for copper foil |
Customization & Quality Assurance: We offer customizable dimensions, thickness tolerances, and surface treatments to perfectly match your project’s unique requirements. Our manufacturing process adheres to strict quality control standards, ensuring consistent performance and reliability for every roll of copper foil.
Para personalizar varias láminas de metal, por favor haga clic en la imagen de abajo para más detalles：.
