Battery-Grade Carbon-Coated Copper FoilProduct Type: Carbon-coated copper foil current collector
Research-grade laboratory product
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LABORATORY PROCUREMENT SUPPORT
For model selection, accessory matching, platform compatibility or configuration confirmation, contact our technical sales team.
E-MAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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The carbon-coated copper foil requires controlled handling to preserve coating integrity and electrical performance. Adhesion, solvent resistance, and surface wetting specifications define acceptable processing conditions.
- Coating Adhesion Constraint: The carbon coating must not delaminate when subjected to a 3M tape pull test.
- Solvent Resistance Constraint: The coating must withstand 100 cotton-swab cycles without exposing the underlying copper foil.
- Surface Wetting Requirement: The coating surface wetting must be at least 38 to ensure adequate bonding with negative-electrode slurry.
- Surface Resistance Limit: The carbon layer surface resistance must not exceed 5 milliohm to maintain low internal resistance.
- Coating Thickness Requirement: The carbon coating thickness must be at least 1 μm to provide sufficient conductive and protective function.
How does the carbon coating on this copper foil improve electrical performance compared to uncoated copper foil?
The carbon coating reduces surface resistance: measured surface resistance is 2 milliohm on the copper foil and 1 milliohm on the carbon layer, indicating a 50% improvement. Additionally, the coating increases surface wetting to a measured value of 50 (specification ≥38), which enhances electrolyte wetting and lowers internal resistance in lithium-ion batteries.
What are the solvent resistance and adhesion characteristics of the carbon coating?
The carbon coating exhibits strong adhesion, passing the 3M tape pull test with no change. It also demonstrates excellent solvent resistance, surviving 100 cotton-swab cycles without exposing the copper foil. This ensures compatibility with common electrode slurry solvents during battery fabrication.
Can the carbon coating thickness and copper foil thickness be customized for specific battery applications?
Yes, the carbon coating thickness is specified at ≥1 μm and can be customized according to requirement. The copper base foil thickness ranges from 4.5 to 18 μm, with available options including 4.5, 5, 6, 8, 9, 12, and 18 μm. Both one-side and two-side coating configurations are available, and the foil format (double-shiny, single-shiny, or double-rough) can be selected.
This battery-grade carbon-coated copper foil offers a low-resistance, high-wetting carbon coating on high-purity copper foil (≥99.9%) for improved anode current collector performance. The product requires custom specification of foil thickness, coating side, and width via quotation, making it suitable for research and bespoke battery applications.
Positive
- Carbon coating reduces interfacial resistance: The carbon layer provides a measured surface resistance of 1 milliohm compared to 2 milliohm on bare copper foil, while achieving a surface wetting index of 50, enhancing electrolyte penetration and lowering internal cell resistance.
- High copper purity ensures consistent conductivity: Copper purity is specified at ≥99.8% with a measured value of ≥99.9%, minimizing impurity-driven degradation and ensuring reliable electrochemical performance in battery applications.
Trade-offs
- Configuration requires quotation-based specification: Base foil thickness (4.5–18 μm), surface format (double-shiny, single-shiny, or double-rough), coating side, and coating width must be confirmed at order time; no standard off-the-shelf configuration is available, adding lead time for custom selection.
- Coating thickness is customizable but ≥1 μm: The carbon coating thickness has a minimum specification of 1 μm and can be customized, but variations in thickness may affect coating uniformity, adhesion characteristics, and process compatibility for specific electrode formulations.
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 excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
