Description
Product Details of Atomfair Lithium Battery Electrolytic Copper Foil (BCF)
1. Basic Product Information
1.1 Product Overview
Atomfair Lithium Battery Electrolytic Copper Foil (BCF) is a core material specifically engineered for the lithium-ion battery manufacturing industry. Produced via an electrolytic process, it boasts high purity (≥99.9%), low impurity content, a smooth and flat surface, uniform tension, and excellent coatability.
With superior hydrophilicity, it effectively enhances battery charge-discharge cycles and service life. We offer on-demand slitting and customization services to precisely match material requirements for diverse battery products.
1.2 Product Specifications
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Project
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Parameter Details
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Nominal Thickness
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4.5um – 20um (Standard specs: 6um, 7um, 8um, 9/10um, 12um, 15um, 20um)
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Tolerances
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Width: 0/+2mm; Length: 0/+10m
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Winding Method
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S-side up, stable tension without loose curling
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1.3 Core Performance (Compliant with IPC-4562-2000 Standard)
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Performance Indicator
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Unit
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Specification Requirements
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Copper Content
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%
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≥99.9
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Surface Density
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mg/10cm²
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6um: 54±1; 7um: 63±1.25; 8um: 72±1.5; 9/10um: 89±1.8; 12um: 107±2.2; 15um: 133±2.8; 20um: 178±3.6
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Tensile Strength (25℃)
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Kg/mm²
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28-35
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Elongation (25℃)
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%
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6um: 5-10; 7um: 5-15; 8um & above: 10-20
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Glossy Surface (S-Side) Roughness (Ra)
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um
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0.1-0.4
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Rough Surface (M-Side) Roughness (Rz)
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um
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6um: 0.8-2.0; Other specs: 0.6-2.0
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Pinholes
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Pcs
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None
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Discoloration Resistance
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–
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No discoloration at 130℃/10min & 150℃/10min
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Waves/Wrinkles
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–
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Max 1 spot: Width ≤40mm; Max 1 spot: Width ≤30mm
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Appearance
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–
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No functional defects (creases, scratches, contamination, oxidation, discoloration)
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1.4 Product Advantages
Superior Structure: Double-sided symmetric structure, metal density close to copper’s theoretical density, ultra-low surface profile, and excellent tensile strength & elongation.
Enhanced Battery Performance: Maximizes contact area with anode materials, significantly reducing contact resistance between anode current collector and active material while improving anode sheet structural symmetry.
Longer Service Life: Excellent thermal expansion resistance prevents anode sheet breakage during charge-discharge cycles, extending battery lifespan.
Efficient Production: High purity and low impurities ensure stable battery performance; excellent coatability meets high-efficiency manufacturing needs.
2. Product Applications
As a core carrier material for lithium-ion batteries, it is mainly used to manufacture battery anode carriers and current collectors. It is widely compatible with various lithium-ion battery products, including:
Consumer electronics batteries (mobile phones, laptops, etc.)
Power batteries (new energy vehicles, energy storage systems, etc.)
Industrial energy storage batteries
It provides core support for battery cycle life, charge-discharge efficiency, and structural stability.
Note: All performance parameters are tested under standard conditions (25℃, 1 atm). For customized specifications or detailed test reports, please contact our technical team.
If you’re interested, have any questions, or have specific customization requirements, please feel free to contact us at inquiry@atomfair.com.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
