Li-Ion Battery Separator Film, Thickness: 25 μm, Width: 60 mm, Length: 500 m, 1 Roll: 500 m

Technical Specification:

1. Material Composition:
   • Base Material: Microporous Polyethylene (PE) or Polypropylene (PP).
     • Designed for high mechanical strength, thermal stability, and chemical compatibility.
   • Optional Coatings:
     • Ceramic or polymer coating for enhanced thermal shutdown and safety features.
2. Physical Dimensions:
   • Thickness: 25 μm (optimized for effective ionic conductivity and mechanical durability).
   • Width: 60 mm (suitable for various electrode sizes).
   • Length: 500 meters per roll.
   • Porosity: Typically 35–50% for efficient ion transport.
3. Electrochemical Properties:
   • Ionic Conductivity:
     • Uniform pore structure ensures efficient ionic transport between electrodes.
   • Electrolyte Wettability:
     • Compatible with common electrolytes for optimal performance.
   • Thermal Stability:
     • Operates reliably at temperatures up to 120°C (varies with coating).
4. Mechanical Properties:
   • Tensile Strength:
     • High mechanical integrity prevents tearing during assembly and operation.
   • Puncture Resistance:
     • Resists mechanical damage from electrode roughness.
5. Thermal Properties:
   • Shutdown Feature (for heat-sensitive separators):
     • Pore closure at elevated temperatures to prevent thermal runaway.
6. Chemical Resistance:
   • Compatible with a wide range of lithium-ion battery electrolytes.

Applications:

1. Primary Applications:
   • Lithium-Ion Battery Separator:
     • Acts as a physical barrier between the anode and cathode, preventing electrical short circuits while allowing ion flow.
2. Industries:
   • Battery Manufacturing:
     • Used in lithium-ion, lithium-polymer, and solid-state battery production.
   • Electric Vehicles (EVs):
     • Essential for high-performance, lightweight batteries in EV packs.
   • Consumer Electronics:
     • Powers devices like smartphones, laptops, tablets, and power tools.
   • Energy Storage Systems (ESS):
     • Applied in renewable energy storage solutions for homes and grids.
3. Advantages for Applications:
   • High Ionic Conductivity:
     • Enhances battery efficiency and performance.
   • Thermal and Mechanical Stability:
     • Ensures safety and longevity under various operating conditions.
   • Customizable Dimensions:
     • Suitable for different cell designs, including cylindrical, prismatic, and pouch cells.
   • Enhanced Safety Features:
     • Optional shutdown and ceramic coatings improve thermal runaway prevention.
4. Specialized Uses:
   • High-Energy Batteries:
     • Suitable for advanced batteries with high energy density and power output.
   • Solid-State Battery Prototypes:
     • Used as a base layer for hybrid or fully solid-state batteries.
   • Custom Cell Configurations:
     • Supports tailored designs in research and development.
5. Challenges and Mitigation:
   • Heat Sensitivity (in uncoated separators):
     • Risk of thermal degradation at high temperatures.
       • Solution: Use ceramic-coated or heat-resistant separators for safety-critical applications.
   • Mechanical Handling:
     • Thin films can tear during unwinding or assembly.
       • Solution: Use automated handling systems and ensure precise tension control.

Summary:

The Li-Ion Battery Separator Film, with a thickness of 25 μm, width of 60 mm, and roll length of 500 m, is a critical component in lithium-ion battery manufacturing. Its high ionic conductivity, thermal stability, and mechanical strength make it indispensable for applications in electric vehicles, consumer electronics, and energy storage systems. Optional coatings and advanced features enhance safety and performance, supporting the production of reliable and high-efficiency batteries.