1. Product Overview
Carbon-coated aluminum foil is a high-performance functional material designed for electrode current collectors in lithium-ion batteries, sodium-ion batteries, and lithium-sulfur solid-state batteries. By depositing a uniform, dense carbon coating on the surface of aluminum foil, it enhances electrical conductivity, improves electrode adhesion, and boosts resistance to electrolytes and organic solvents—effectively addressing issues like poor current collection, active material detachment, and interface corrosion in traditional battery electrodes. Our product lineup covers six models (CA01, CA02, CA03, CAN2, CAG1, CAG2), each tailored to specific battery systems and electrode material requirements, providing reliable support for high-energy-density, long-cycle-life, and high-rate battery production.
2. Technical Specifications
The following table integrates all key performance parameters of each carbon-coated aluminum foil model, verified through rigorous testing to ensure consistency and reliability.
Complete Technical Performance Parameters
Test Item | Unit | CA01 (Universal High-Rate LFP Cathode) | CA02 (Small-Particle LFP Cathode) | CA03 (Li-Sulfur Solid-State Battery Cathode) | CAN2 (Sodium-Ion Battery Anode) | CAG1 (Dry-Process Lithium Battery Cathode) | CAG2 (Dry-Process Lithium Battery Cathode) |
Application Scenario | - | Universal High-Rate LFP Cathode | Small-Particle LFP Cathode | Li-Sulfur Solid-State Battery Cathode | Sodium-Ion Battery Anode | Dry-Process Lithium Battery Cathode | Dry-Process Lithium Battery Cathode |
Appearance | - | Black Coating | Black-Gray Coating | Black-Gray Coating | Black Coating | Gray-Black Coating | Black-Gray Coating |
Single-Side Coating Thickness | μm | 0.3~1.2 | 0.3~1.2 | 0.3~1.2 | 0.3~1.2 | 1.5~3.5 | 1.0~2.0 |
Single-Side Coating Areal Density | g/m² | 0.2~0.8 | 0.2~0.8 | 0.2~0.8 | 0.2~0.8 | 0.5~2.0 | 0.4~1.8 |
Coating Width Deviation | mm | ±0.8 | ±0.8 | ±0.8 | ±0.8 | ±0.8 | ±0.8 |
Vertical Alignment | mm | <0.8 | <0.8 | <0.8 | <0.8 | <0.8 | <0.8 |
Surface Tension (Dyne Value) | dyn/cm | >64 | >64 | >64 | >64 | >64 | >64 |
Coating Adhesion (3M Tape Test) | - | Excellent | Very Good | Very Good | Very Good | Very Good | Very Good |
Interlayer Adhesion | N/m | ≥24 | ≥24 | ≥16 | ≥8 | ≥8 | ≥8 |
NMP Wipe Resistance | Cycles | >150 | >200 | >500 | >200 | / | / |
Electrolyte Wipe Resistance | Cycles | >200 | >200 | >200 | >200 | >200 | >200 |
Electrolyte Immersion Resistance | - | No Powder Loss After 85℃/24h Immersion | No Powder Loss After 85℃/24h Immersion | No Powder Loss After 85℃/24h Immersion | No Powder Loss After 85℃/24h Immersion | No Powder Loss After 85℃/24h Immersion | No Powder Loss After 85℃/24h Immersion |
DMC Swelling Resistance | μm | <2μm After 60℃/24h Immersion | <2μm After 60℃/24h Immersion | <2μm After 60℃/24h Immersion | <2μm After 60℃/24h Immersion | <2μm After 60℃/24h Immersion | <2μm After 60℃/24h Immersion |
Mechanical Strength | MPa | Highly Dependent on Substrate Selection | 1100 Alloy ≥230MPa, 3% | 1060 Alloy ≥200MPa, 3.5% | Highly Dependent on Substrate Selection | 1100 Alloy ≥230MPa, 3% | 1060 Alloy ≥200MPa, 3.5% |
Coating Resistance | Ω | ≤0.35 | ≤0.30 | ≤0.30 | ≤0.35 | ≤0.35 | ≤0.35 |
Surface Resistance | Ω/□ | <10 | <10 | <10 | <10 | <10 | <10 |
Weight Loss Rate | % | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.5 |
