C11000 C1100 T2 Soft Pure Copper Foil For Lithium Battery
Product Description
Our Custom 0.1-3mm 99.99% C11000 C1100 T2 Soft Pure Copper Foil is a high-purity, high-performance material specifically engineered for demanding electrical and industrial applications, including lithium battery manufacturing. Manufactured from grade C11000 (equivalent to C1100 and T2), this copper foil offers exceptional electrical conductivity, excellent ductility, and superior corrosion resistance. With customizable thicknesses ranging from 0.05mm to 3mm and widths up to 600mm, it meets diverse project requirements across the electronics, aerospace, and new energy sectors.
Key Features
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High Purity (≥99.99% Cu): Ensures maximum electrical and thermal conductivity, critical for battery and electronic applications.
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Multiple Tempers Available: Hard, 3/4 hard, 1/2 hard, 1/4 hard, and annealed (soft) options provide flexibility for stamping, bending, and deep drawing.
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Precision Rolled: Consistent thickness tolerance and smooth surface finish for reliable performance.
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Custom Dimensions: Thickness from 0.05mm to 3mm, width ≤600mm, and customizable lengths to suit your production needs.
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Excellent Processability: Supports bending, welding, decoiling, cutting, and punching without cracking.
Technical Specifications
| Parameter |
Details |
| Material Grade |
C11000 / C1100 / T2 |
| Purity |
≥ 99.99% (Cu ≥ 99.90% actual, with 99.99% achievable on request) |
| Thickness Range |
0.05mm – 3mm (customizable) |
| Width Range |
≤ 600mm |
| Length |
As required (e.g., 30mm – 1000mm or coil form) |
| Temper |
Hard, 3/4 Hard, 1/2 Hard, 1/4 Hard, Annealed (Soft) |
| Electrical Conductivity (IACS) |
Annealed: ≥ 100%; Hard tempers: ≥ 97% |
| Surface Finish |
Black, peeled, polished, or customized |
| Standard |
GB/T 467-2010 (comparable to ASTM B152) |
| HS Code |
7410110000 |
| Certification |
ISO9001, ISO14001, ISO45001 |
| MOQ |
1 ton (flexible for large-scale projects) |
| Packaging |
Standard export package (wooden reels or cartons) |
Applications
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Lithium Battery Anode Current Collector
The primary application. Ultra-thin (6–15μm) soft annealed copper foil serves as the negative electrode current collector in lithium-ion batteries.
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Electrical & Electronic Components
Flexible printed circuits (FPC), electromagnetic shielding, grounding tapes, and transformer windings.
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New Energy Vehicles (NEV/EV)
Busbars, high-voltage connectors, and battery interconnects.
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Construction & Decoration
Architectural cladding, roofing, and ornamental metalwork.
How It Works
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Conduction Path: During charging/discharging, electrons flow through the external circuit to/from the copper foil, which is coated with anode material (typically graphite).
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Mechanical Support: The copper foil provides a strong yet flexible substrate for the active material, preventing cracking during volume changes.
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Heat Dissipation: High thermal conductivity (≈400 W/m·K) helps dissipate heat generated during rapid charge/discharge cycles.
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Corrosion Resistance: The pure copper surface resists electrolyte attack, ensuring long cycle life.
FAQ (Frequently Asked Questions)
Q1: What is the difference between C11000 and C10200?
A: Both are high-purity coppers. C11000 (electrolytic tough pitch copper) contains ~0.04% oxygen, while C10200 (oxygen-free) has <0.001% oxygen. For most lithium battery and electronic applications, C11000 offers excellent performance at a lower cost. For welding in reducing atmospheres, C10200 is preferred.
Q2: Can you produce thickness below 0.05mm?
A: Yes, we can produce down to 0.006mm (6μm) for ultra-thin battery foil applications. Please contact our sales team with your specific requirements.
Q3: What is your MOQ?
A: The standard MOQ is 1 ton per specification. However, for sample validation or small-batch trials, we may accommodate smaller quantities on a case-by-case basis.
Q4: How is the foil packaged to prevent oxidation?
A: All copper foils are vacuum-sealed with anti-tarnish paper and desiccant, then placed in moisture-proof wooden reels or cartons, compliant with standard export packaging.
Q5: Do you provide cutting and slitting services?
A: Yes, we can slit coils to your required width (≤600mm) and cut sheets to custom lengths (e.g., 30–1000mm) at no extra charge for large orders.
Q6: Is this product RoHS compliant?
A: Yes, our C11000 copper foil contains no restricted hazardous substances and is fully RoHS and REACH compliant.
Q7: What is the lead time?
A: Typical lead time is 15–25 days after deposit confirmation, depending on quantity and customization level.
Q8: Can you provide free samples?
A: Free samples (A4 size or small coil) are available for testing. Buyer typically covers shipping cost.
