Aluminum Foil for Battery Cathode Substrate, Size: 350 m*280 mm*15 µm

Technical Specification:

1. Material Composition:
   • Material: High-purity aluminum (≥99.9%, battery-grade).
   • Free of impurities to ensure stability and performance in lithium-ion battery environments.
2. Physical Dimensions:
   • Length: 350 m
   • Width: 280 mm
   • Thickness: 15 µm (uniform thickness for consistent electrode performance).
3. Physical Properties:
   • Density: ~2.7 g/cm³.
   • Surface Roughness:
     • Typically low to allow uniform adhesion of cathode materials.
     • Optional surface treatments (e.g., chemical or mechanical polishing) are available to enhance material bonding.
   • Flatness: Excellent flatness to support precision coating processes.
4. Thermal Properties:
   • Thermal Conductivity: High thermal conductivity (~235 W/m·K), aiding in heat dissipation during charge and discharge cycles.
   • Operating Temperature: Stable under typical lithium-ion battery operating temperatures.
5. Mechanical Properties:
   • Tensile Strength: High mechanical strength to resist tearing during electrode fabrication.
   • Flexibility: Sufficient to withstand rolling and other fabrication processes without cracking.
6. Surface Treatment (Optional):
   • Coated or Non-Coated: Optionally coated with conductive carbon or another material to improve conductivity and adhesion.

Applications:

1. Primary Applications:
   • Cathode Substrate in Lithium-Ion Batteries:
     • Serves as the current collector for cathode materials, such as LiCoO₂, LiFePO₄, and NMC compounds.
2. Industries:
   • Electric Vehicles (EVs):
     • Essential for lithium-ion batteries in EV battery packs requiring high energy density and long life.
   • Consumer Electronics:
     • Powers devices like smartphones, tablets, laptops, and wearables.
   • Energy Storage Systems (ESS):
     • Used in renewable energy storage, grid-scale batteries, and backup power systems.
   • Aerospace and Defense:
     • Supports lightweight and high-performance battery systems.
3. Advantages for Applications:
   • High Conductivity:
     • Aluminum provides excellent electrical conductivity, ensuring efficient current collection.
   • Lightweight:
     • Reduces the overall weight of battery systems, critical for EVs and portable devices.
   • Corrosion Resistance:
     • Stable in lithium-ion battery environments, reducing the risk of degradation.
   • Scalability:
     • Dimensions are optimized for industrial-scale manufacturing of lithium-ion batteries.
4. Specialized Uses:
   • High-Voltage Cathodes:
     • Suitable for advanced cathode chemistries operating at voltages above 4.5 V.
   • Thin-Film Batteries:
     • Ideal for applications requiring ultra-thin cathode substrates with high precision.
5. Challenges and Mitigation:
   • Surface Oxidation:
     • Aluminum surfaces can oxidize, reducing conductivity.
       • Solution: Surface coatings or pre-treatment with conductive carbon.
   • Handling Durability:
     • Thin foil can tear during processing.
       • Solution: Employ advanced rolling and handling techniques to minimize damage.

Summary:

The Aluminum Foil for Battery Cathode Substrate (350 m × 280 mm × 15 µm) is a high-quality, battery-grade material designed for use in lithium-ion battery cathodes. Its high conductivity, lightweight nature, and excellent mechanical and thermal properties make it an essential component for energy storage solutions in EVs, consumer electronics, and renewable energy systems. With optional surface treatments, it provides enhanced performance and durability for advanced battery designs.